CVE-2026-65184 PUBLISHED

Avocent ACS8000 wsserver command injection

Assigner: runZero
Reserved: 21.07.2026 Published: 26.10.2026 Updated: 26.10.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 9.8

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	Vertiv
Product	Avocent ACS8000
Versions	Default: unaffected affected from 0 to 2.32.4 (incl.)

Credits

HD Moore of runZero finder
Tod Beardsley of runZero coordinator

References

Problem Types

CWE-78 Improper neutralization of special elements used in an OS command ('OS command injection') CWE