---
id: CVE-2026-20153
title: >-
  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
summary: >-
  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 addresse…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-20
vendor: cisco
product: roomos
affected:
  - roomos < 11.32.6.0
  - 'roomos >= 26.0.1.2, < 26.5.2.2'
  - roomos_cloud < 11.39.1.1
  - 'roomos_cloud >= 26.0.1.2, < 26.7.1.7'
patched:
  - roomos 26.5.2.2
  - roomos_cloud 26.7.1.7
published: '2026-07-15'
updated: '2026-08-14'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-20153'
references:
  - url: >-
      https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-roomos-AqNMbEq
    label: psirt@cisco.com
  - url: >-
      https://www.cve.org/Media/News/item/blog/2026/06/16/Preserving-Vulnerability-Level-Identification
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.00467
epssPercentile: 0.39521
ingestedAt: '2026-08-15T13:26:46.648Z'
---

## Overview

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.

## Affected

- `roomos < 11.32.6.0`
- `roomos >= 26.0.1.2, < 26.5.2.2`
- `roomos_cloud < 11.39.1.1`
- `roomos_cloud >= 26.0.1.2, < 26.7.1.7`

## Remediation

Upgrade past the affected range:

- `roomos 26.5.2.2`
- `roomos_cloud 26.7.1.7`