What is CVE-2026-65184?

CVE-2026-65184 is a critical-severity vulnerability in Vertiv Avocent Acs8000, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-10-26.

How severe is CVE-2026-65184?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Vertiv Avocent Acs8000

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.

Vulnerability class: Command Injection (OS Command Injection)

Published 2026-10-26 · last modified 2026-10-26.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Vertiv Avocent Acs8000

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

44488dab-36db-4358-99f9-bc116477f914 (third-party-advisory)
44488dab-36db-4358-99f9-bc116477f914 (related)

Frequently asked questions

What is CVE-2026-65184?: CVE-2026-65184 is a critical-severity vulnerability in Vertiv Avocent Acs8000, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-10-26.
How severe is CVE-2026-65184?: Critical severity. CVSS v3 base score is 9.8 out of 10.