Improper control of a resource through its lifetime in Cisco RoomOS - CVE-2026-20158
Published: July 17, 2026
Vulnerability identifier: #VU138380
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-20158
CWE-ID: CWE-664
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to improper control of a resource through its lifetime in Cisco RoomOS when processing input. A remote user can trigger resource lifecycle errors to cause a denial of service.
Affected software
Cisco RoomOS
How to mitigate CVE-2026-20158
Install security update from vendor's website.
Cisco RoomOS - addressed in versions 11.32.6.0, 26.5.2.2