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Permalink CVE-2026-20156
8.1 HIGH
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): High (H)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): High (H)
  • Integrity (I): High (H)
  • Availability (A): High (H)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): High (H)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): High (H)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): High (H)
  • Modified Availability (MA): High (H)
created 6 days, 5 hours ago Activity log
  • Created & dismissed (no matching packages found) suggestion 6 days, 5 hours ago
Cisco RoomOS Security Hardening Release - Buffer Management Vulnerabilities

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.

Affected products

Cisco RoomOS Software
  • ==RoomOS 10.11.3.0
  • ==RoomOS 10.11.6.0
  • ==RoomOS 11.1.3.1
  • ==RoomOS 11.34.1.2
  • ==RoomOS 11.9.3.1
  • ==RoomOS 11.5.4.6
  • ==RoomOS 10.8.3.1
  • ==RoomOS 11.38.1.1
  • ==RoomOS 26.1.1.5
  • ==RoomOS 10.15.3.0
  • ==RoomOS 11.24.4.1
  • ==RoomOS 10.15.2.2
  • ==RoomOS 11.27.3.0
  • ==RoomOS 10.19.2.2
  • ==RoomOS 10.15.4.1
  • ==RoomOS 10.19 StepUpg
  • ==RoomOS 11.1.4.1
  • ==RoomOS 11.33.1.7
  • ==RoomOS 11.17.4.0
  • ==RoomOS 11.28.1.3
  • ==RoomOS 11.20.2.3
  • ==RoomOS 10.11.2.2
  • ==RoomOS 11.5.2.4
  • ==RoomOS 11.27.5.0
  • ==RoomOS 11.32.4.0
  • ==RoomOS 10.15.5.3
  • ==RoomOS 26.2.2.2
  • ==RoomOS 11.32.5.1
  • ==RoomOS 11.14.2.1
  • ==RoomOS 11.9.2.4
  • ==RoomOS 10.19.4.2
  • ==RoomOS 11.14.2.3
  • ==RoomOS 10.3.2.0
  • ==RoomOS 11.14.3.0
  • ==RoomOS 10.19.3.0
  • ==RoomOS 11.23.1.6
  • ==RoomOS 11.31.1.5
  • ==RoomOS 11.32.2.1
  • ==RoomOS 11.27.2.0
  • ==RoomOS 10.19.5.6
  • ==RoomOS 26.4.1.6
  • ==RoomOS 10.3.4.0
  • ==RoomOS 10.3.3.0
  • ==RoomOS 11.32.3.0
  • ==RoomOS 11.35.1.2
  • ==RoomOS 11.14.5.0
  • ==RoomOS 10.11.5.2
  • ==RoomOS 26.4.1.4
  • ==RoomOS 10.11.4.1
  • ==RoomOS 11.14.4.0
  • ==RoomOS 11.5.3.3
  • ==RoomOS 11.20.3.0
  • ==RoomOS 11.24.1.5
  • ==RoomOS 11.23.1.8
  • ==RoomOS 11.36.1.1
  • ==RoomOS 26.0.1.2
  • ==RoomOS 26.5.2.0
  • ==RoomOS 11.24.3.0
  • ==RoomOS 26.3.1.3
  • ==RoomOS 11.37.1.0
  • ==RoomOS 11.17.2.2
  • ==RoomOS 11.27.4.0
  • ==RoomOS 10.3.2.4
  • ==RoomOS 10.8.4.0
  • ==RoomOS 11.24.2.4
  • ==RoomOS 11.1.2.4
  • ==RoomOS 11.17.3.0
  • ==RoomOS 10.8.2.5