CVE-2026-65184
Avocent ACS8000 wsserver command injection
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Avocent ACS8000 wsserver command injection
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.
- Record
CVE-2026-65184- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-78
- Updated
- 2026-11-02
EUVDEUVD-2026-109933
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.
- Record
EUVD-2026-109933- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-f563-j7vj-6j8f
The root-privileged `wsserver` terminal-bridge daemon builds a shell command from client-supplied...
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.
- Record
GHSA-f563-j7vj-6j8f- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-78
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-65184- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-78
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-65184 is a critical vulnerability (CVSS 9.8) in Vertiv Avocent Acs8000, published October 26, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.42%, the 36th percentile. No source names a fixed version.