CRITICAL 9.8 NVD
CVE-2026-65184
The root-privileged `wsserver` terminal-bridge daemon builds a shell command from client-supplied WebSocket fields and passes it to `system()` and `popen()` wit
The root-privileged `wsserver` terminal-bridge daemon builds a shell command from client-supplied WebSocket fields and passes it to `system()` and `popen()` without quoting, escaping, or character-set validation. The daemon's public-key session path performs no appliance-session check.
References
- https://www.runzero.com/advisories/avocent-acs8000-wsserver-cmdinj-cve-2026-65184
- https://www.runzero.com/blog/lights-out-exposed/
This critical severity vulnerability with a CVSS score of 9.8 was published on 2026-10-26 via NVD.
Risk Timeline
CVE Disclosed2026-10-26 · -1 days ago
Remediation Resources
Analysis & PoC
www.runzero.com/blog/lights-out-exposed/
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