EUVD-2026-65002
GHSA-hpmr-74gj-7m6c
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-reachable web interface (AV:N), no complexity or interaction required (AC:L/UI:N), but admin credentials mandatory (PR:H); scope unchanged as impact is confined to the switch itself.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
3DescriptionCVE.org
Multiple DrayTek VigorSwitch models contain a command injection vulnerability in the setDevNet function. The vulnerability is caused by insufficient filtering of the username and password fields before command execution. A remote attacker can trigger this vulnerability via crafted input to execute arbitrary commands with root privileges. Exploitation requires valid administrative credentials for the device's web management interface.
AnalysisAI
Command injection in DrayTek VigorSwitch's setDevNet function allows authenticated remote attackers to execute arbitrary OS commands with root privileges by supplying crafted username or password values. At least ten VigorSwitch models are confirmed affected via CPE data, with the full tag list extending coverage to approximately 28 model variants. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires valid administrative credentials for the DrayTek VigorSwitch web management interface (confirmed by CVSS PR:H). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 8.6 (with VC:H/VI:H/VA:H) accurately reflects the post-exploitation impact - root-level shell access on a network switch - but the PR:H requirement is a meaningful real-world mitigating factor. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Consult the DrayTek security advisory at https://www.draytek.com/about/security-advisory/multiple-vulnerabilities-in-vigorswitch-series-august-2026/ and apply the firmware update specified therein - an exact patched firmware version was not included in the available intelligence data and must be confirmed directly from DrayTek. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify all affected DrayTek VigorSwitch models deployed in your environment against the CPE list, audit and strengthen all administrative credentials with unique complex passwords, and restrict administrative access to essential authorized personnel only. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
More in Vigorswitch G2540Xs
View allPre-authentication OS command injection in DrayTek VigorSwitch managed switches lets a remote, unauthenticated attacker
Command injection in DrayTek VigorSwitch's setTime function enables authenticated administrators to execute arbitrary OS
Command injection in multiple DrayTek VigorSwitch models enables authenticated administrators to execute arbitrary OS co
Command injection in multiple DrayTek VigorSwitch models' getDetail function enables authenticated remote attackers hold
Command injection in DrayTek VigorSwitch's getVid function allows an authenticated remote administrator to execute arbit
Command injection in multiple DrayTek VigorSwitch managed switch models allows an authenticated remote administrator to
Command injection in the DrayTek VigorSwitch `webBackupAction` function allows authenticated remote attackers to execute
Command injection in the DrayTek VigorSwitch series' pingtrace diagnostic function allows an authenticated administrator
Command injection in DrayTek VigorSwitch's jsonstatus function allows authenticated remote administrators to execute arb
Command injection in DrayTek VigorSwitch's tftp_upgrade function enables authenticated remote administrators to execute
Command injection via the commandTable function affects 28 DrayTek VigorSwitch managed switch models across multiple fir
Command injection in DrayTek VigorSwitch firmware's fdftDevice function allows an authenticated remote administrator to
Same weakness CWE-78 – OS Command Injection
View allSame technique Command Injection
View allShare
External POC / Exploit Code
Leaving vuln.today