Cisco RoomOS up to 26.5.2.0 input validation

Summaryinfo

A vulnerability was found in Cisco RoomOS and classified as very critical. The impacted element is an unknown function. The manipulation results in input validation. This vulnerability is known as CVE-2026-20153. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in Cisco RoomOS. It has been classified as very critical. Affected is an unknown code. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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-2026-20153 are related to improper input validation that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-20.

The advisory is shared for download at sec.cloudapps.cisco.com. This vulnerability is traded as CVE-2026-20153 since 10/08/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 07/15/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Cisco

Name

• RoomOS

Version

• 10.3.2.0
• 10.3.2.4
• 10.3.3.0
• 10.3.4.0
• 10.8.2.5
• 10.8.3.1
• 10.8.4.0
• 10.11.2.2
• 10.11.3.0
• 10.11.4.1
• 10.11.5.2
• 10.11.6.0
• 10.15.2.2
• 10.15.3.0
• 10.15.4.1
• 10.15.5.3
• 10.19.2.2
• 10.19.3.0
• 10.19.4.2
• 10.19.5.6
• 11.1.2.4
• 11.1.3.1
• 11.1.4.1
• 11.5.2.4
• 11.5.3.3
• 11.5.4.6
• 11.9.2.4
• 11.9.3.1
• 11.14.2.1
• 11.14.2.3
• 11.14.3.0
• 11.14.4.0
• 11.14.5.0
• 11.17.2.2
• 11.17.3.0
• 11.17.4.0
• 11.20.2.3
• 11.20.3.0
• 11.23.1.6
• 11.23.1.8
• 11.24.1.5
• 11.24.2.4
• 11.24.3.0
• 11.24.4.1
• 11.27.2.0
• 11.27.3.0
• 11.27.4.0
• 11.27.5.0
• 11.28.1.3
• 11.31.1.5
• 11.32.2.1
• 11.32.3.0
• 11.32.4.0
• 11.32.5.1
• 11.33.1.7
• 11.34.1.2
• 11.35.1.2
• 11.36.1.1
• 11.37.1.0
• 11.38.1.1
• 26.0.1.2
• 26.1.1.5
• 26.2.2.2
• 26.3.1.3
• 26.4.1.4
• 26.4.1.6
• 26.5.2.0

License

• commercial

Website

• Vendor: https://www.cisco.com/

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