CVE-2026-20156

HIGH

Cisco RoomOS Security Hardening Release - Buffer Management Vulnerabilities

Title source: cna
STIX 2.1

Description

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.

References (1)

Core 1

Scores

CVSS v3 8.1
EPSS 0.0023
EPSS Percentile 13.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-119
Status published
Products (50)
Cisco/Cisco RoomOS Software RoomOS 10.11.2.2
Cisco/Cisco RoomOS Software RoomOS 10.11.3.0
Cisco/Cisco RoomOS Software RoomOS 10.11.4.1
Cisco/Cisco RoomOS Software RoomOS 10.11.5.2
Cisco/Cisco RoomOS Software RoomOS 10.11.6.0
Cisco/Cisco RoomOS Software RoomOS 10.15.2.2
Cisco/Cisco RoomOS Software RoomOS 10.15.3.0
Cisco/Cisco RoomOS Software RoomOS 10.15.4.1
Cisco/Cisco RoomOS Software RoomOS 10.15.5.3
Cisco/Cisco RoomOS Software RoomOS 10.19 StepUpg
... and 40 more
Published Jul 15, 2026
Tracked Since Jul 15, 2026