EUVD-2026-64985
GHSA-3f7c-qwwm-whmh
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 delivery and no user interaction confirmed; PR:H because admin credentials are explicitly required; no scope change as impact is bounded 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 setDevice function. The vulnerability is caused by insufficient sanitization of the username, password, and location 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 via the setDevice function affects multiple DrayTek VigorSwitch managed switch models, allowing an authenticated remote administrator to execute arbitrary OS commands with root privileges by supplying unsanitized input in the username, password, or location fields. The breadth of affected hardware - at least 28 distinct VigorSwitch SKUs spanning G, P, PQ, Q, and FX series - substantially widens the organizational exposure surface. …
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 device's web management interface - the CVSS PR:H metric confirms this is a high-privilege prerequisite, not an unauthenticated path. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H) scores 8.6, reflecting network reachability and full system-level impact, tempered significantly by the PR:H requirement - valid administrative credentials are a hard prerequisite. … 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 | The primary remediation is to apply the patched firmware released by DrayTek, details of which are available in the vendor security advisory at https://www.draytek.com/about/security-advisory/multiple-vulnerabilities-in-vigorswitch-series-august-2026/. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, conduct a complete inventory of DrayTek VigorSwitch deployments to identify affected models (G, P, PQ, Q, FX series) and audit which accounts maintain administrative privileges. …
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 setDevNet function allows authenticated remote attackers to execute arbitrary
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
Same weakness CWE-78 – OS Command Injection
View allSame technique Command Injection
View allShare
External POC / Exploit Code
Leaving vuln.today