Vulnerability · Published Oct 26, 2026 · Assigned by runZero
CVE-2026-65184Avocent ACS8000 wsserver command injection
Critical 9.8
In plain English
A critical-severity OS command injection in Avocent ACS8000 from Vertiv. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.4%top 63.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Vertiv | Avocent ACS8000 | 0 – through 2.32.4 |
Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H