CVE-2026-20156

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 Common Weakness Enumeration (CWE) Pillar CWE-119.

Score

CVSS 3.1 9.8 Critical

Status

Undergoing Analysis - psirt@cisco.com

Published

2026-07-15

Last modified

2026-10-24

Weaknesses

CWE-119

Affected products

• Cisco Roomos Software (Cisco)
• Roomos (Cisco)
• Roomos Cloud (Cisco)

References

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-roomos-AqNMbEq
• https://www.cve.org/Media/News/item/blog/2026/06/16/Preserving-Vulnerability-Level-Identification