EUVD-2026-64978
GHSA-rx95-5fgm-f7j9
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-delivered via web interface with admin auth required (PR:H); no scope change; full CIA impact on the device once authenticated.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
3DescriptionCVE.org
Multiple DrayTek VigorSwitch models contain a command injection vulnerability in the sysreboot function. The vulnerability is caused by insufficient filtering of the config, act, pathN, and valueN 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 multiple DrayTek VigorSwitch managed switch models allows an authenticated remote administrator to execute arbitrary OS commands with root privileges via the web management interface. The flaw resides in the sysreboot function, which fails to sanitize the config, act, pathN, and valueN parameters before passing them to OS command execution, per CWE-78. …
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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 both the CVE description and the CVSS 4.0 vector's PR:H metric. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 8.6 reflects high network-reachable impact (VC:H/VI:H/VA:H) tempered by the PR:H requirement, meaning an attacker must already hold valid administrative credentials before exploitation is possible. … 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 and apply firmware updates per the DrayTek 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 an inventory of all DrayTek VigorSwitch models deployed in production, cross-reference against the 28 affected SKUs published by DrayTek, and identify which devices require patching. …
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Same weakness CWE-78 – OS Command Injection
View allSame technique Command Injection
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External POC / Exploit Code
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