PatchTheCVECVE-2026-20156: As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco RoomOS engineering
CVE-2026-20156 is a high-severity flaw (CVSS 8.1) affecting roomos, roomos cloud. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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-2026-20156 are related to improper restriction of operations within the bounds of a memory buffer that are grouped under the
Why this priority
- High severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 8.1 (High) |
| Attack vector | Network (remote) |
| Attack complexity | High |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.5% (top 61%) |
| CISA exploited list | No |
| Weakness | CWE-119 |
| Published | 2026-07-15 |
| Last modified | 2026-10-24 |
Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-20156?
roomos: upgrade to 11.32.6.0, 26.5.2.2; roomos cloud: upgrade to 11.39.1.1, 26.7.1.7. Exact commands for each OS are on this page.
Is CVE-2026-20156 being exploited?
CVE-2026-20156 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-20156 affect?
CVE-2026-20156 affects roomos, roomos cloud. Severity is high (CVSS 8.1). 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 m
How urgent is CVE-2026-20156?
Priority 43/100. High severity; Remotely exploitable, no login, no user action
Software pages
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