Cisco RoomOS up to 26.5.2.0 missing encryption

Summaryinfo

A vulnerability was found in Cisco RoomOS. It has been classified as problematic. This affects an unknown function. This manipulation causes missing encryption. This vulnerability is handled as CVE-2026-20157. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Cisco RoomOS. It has been declared as problematic. Affected by this vulnerability is an unknown code block. The manipulation with an unknown input leads to a missing encryption vulnerability. The CWE definition for the vulnerability is CWE-311. The product does not encrypt sensitive or critical information before storage or transmission. As an impact it is known to affect confidentiality. The summary by CVE is:

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-2026-20157 are related to missing encryption that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-311.

The advisory is shared at sec.cloudapps.cisco.com. This vulnerability is known as CVE-2026-20157 since 10/08/2025. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/15/2026). MITRE ATT&CK project uses the attack technique T1600 for this issue.

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

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion