9.8 Critical

The root-privileged wsserver terminal-bridge daemon builds a shell command from client-supplied WebSocket fields and passes it to system()…

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() without quoting, escaping, or character-set validation. The daemon's public-key session path performs no appliance-session check.

Assessment

CVSS: 9.8 (v3.1)
Severity: Critical
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 26 October 2026
Last updated: 26 October 2026
Weakness: CWE-78
Assigner: 44488dab-36db-4358-99f9-bc116477f914

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

At the source

References

https://www.runzero.com/advisories/avocent-acs8000-wsserver-cmdinj-cve-2026-65184
https://www.runzero.com/blog/lights-out-exposed/

Query this programmatically

Agents can read this through the MCP endpoint, or over HTTP:

curl https://cve.zerocrew.in/api/cve/CVE-2026-65184