EUVD-2026-64976
GHSA-6fmm-chrg-7fpg
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
PR:H confirmed by both description and CVSS 4.0 input; root OS command execution yields full C/I/A:H; no scope change as impact is confined to the switch firmware itself.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
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
Lifecycle Timeline
3DescriptionCVE.org
Multiple DrayTek VigorSwitch models contain a command injection vulnerability in the pingtrace function. The vulnerability is caused by insufficient validation of the host field 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 the DrayTek VigorSwitch series' pingtrace diagnostic function allows an authenticated administrator to execute arbitrary OS commands with root privileges by submitting a crafted host field value. Twenty-eight distinct VigorSwitch models across the G, P, Q, PQ, FX, and PX series are affected, with patched firmware releases varying by model family (2.9.10, 2.10.6, 2.10.7, and 3.10.6). …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation unconditionally requires valid administrative credentials for the VigorSwitch web management interface - the CVSS PR:H metric confirms this, and the CVE description states it explicitly. … 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) yields a score of 8.6, reflecting network-reachable exploitation with no complexity barrier but requiring high-privilege administrator credentials - a significant real-world constraint. … 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 | Upgrade affected VigorSwitch firmware to the patched releases identified by ENISA EUVD-2026-64976 and confirmed by the DrayTek security advisory at https://www.draytek.com/about/security-advisory/multiple-vulnerabilities-in-vigorswitch-series-august-2026/: G2540xs, P2540xs, and FX2120 to 3.9.10 or later; G2542x, P2542x, and P2542xh to 3.10.6 or later; G2282x and P2282x to 2.10.6 or later; PQ2300xb and Q2300x to 2.10.7 or later; all remaining affected models (G2540x, P2540x, G2280x, P2280x, G2121, P2121, PQ2121x, Q2121x, Q2200x, PQ2200xb, G2100, P2100, PX2060, G1280, P1280, G1282, P1282, P1281x) to 2.9.10 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all DrayTek VigorSwitch devices in production and development environments by model family and current firmware version, and review administrative access logs for any unusual activity in the pingtrace diagnostic function over the past 90 days. …
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Same weakness CWE-78 – OS Command Injection
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External POC / Exploit Code
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