CVE-2026-20158 Cisco RoomOS Security Hardening Release - Resource Lifetime Management Vulnerabilities

High 7.5 Published 15 Jul 2026 Updated 14 Aug 2026

Cisco RoomOS contains resource lifetime management flaws that could lead to undefined behavior or crashes, requiring a security hardening update.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-20158?

CVE-2026-20158 is a high-severity vulnerability in Cisco RoomOS Software, published on 15 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco RoomOS engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20158 are related to improper control of a resource through its lifetime that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-664.

Weakness: CWE-664

Which versions are affected by CVE-2026-20158?

It affects 2 products.

Products include Cisco Roomos, Cisco Roomos Cloud.

How do I fix CVE-2026-20158?

No fix has been published for CVE-2026-20158 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-20158 being exploited?

There is no known exploitation of CVE-2026-20158 in the wild and no public exploit code.

Sources

Also known as GHSA-w7f5-hxx8-wf55.