by Kastro
Paper/Archive/CVE-2026-65184

CVE-2026-65184

Vertiv Avocent ACS8000 — Avocent ACS8000 wsserver command injection

EPSS 0.4%CVSS 9.8
critical.is priorityof 100
37
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 35.9.359 × 207.2No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Avocent ACS8000≤ 2.32.4–CNA

Scores by source

runZero (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

writeuprunzero.com/advisories/avocent-acs8000-wsserver-cmdinj-cve-2026-65184refrunzero.com/blog/lights-out-exposed