Quick answers
- Is CVE-2026-20153 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-20153 being exploited in the wild.
- How severe is CVE-2026-20153?
- High severity, with a CVSS score of 7.5, published 15 July 2026.
- Which products and versions are affected?
- Cisco RoomOS 11 and earlier; 26 before 26.5.2.2.
- Is there a fix for CVE-2026-20153?
- A patch was published on 2026-07-15. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-20153 attacked?
- It is attacked over the network, in an operating system.
- Am I affected by CVE-2026-20153?
- Check whether you run Cisco RoomOS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
Multiple vulnerabilities in Cisco RoomOS are categorized under CWE-20 (Improper Input Validation). The root cause is a failure of the software to properly validate input data, which can be exploited by a remote, unauthenticated attacker via the network. A successful exploit allows the attacker to cause a denial of service (DoS) on the affected device. These vulnerabilities were identified during internal testing, including the use of AI models for security review. Cisco has released RoomOS 11.32.6.0 (on-premises), 11.39.1.1 (cloud), and 26.5.2.2 to address these issues.
Affected products
- Cisco RoomOS Software 11 and earlier; 26 before 26.5.2.2
Timeline
- 2026-07-15: disclosed
- 2026-07-15: advisory
- 2026-07-15: patched