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CVE-2025-20156

Cisco Meeting Management Client-Server Privilege Escalation Vulnerability

Critical9.9EPSS 1.2%
Published
Updated
Reserved
Assigned by
cisco

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.

Scores

CVSS scores of CVE-2025-20156, by who scored it
Scored byCVSSScoreVector
ciscoCNA (assigner)3.1Critical9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
NVDNVD · Analyzed3.1Critical9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS (exploitation in 30 days)
1.2% · top 32% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: yes · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.9.

Weakness

Affected products

  • Cisco · Cisco Meeting Management

    • affected CMM3.4.0
    • affected CMM3.2.0
    • affected CMM2.9.1
    • affected CMM2.9.0
    • affected CMM3.1.0
    • affected CMM3.5.0
    • affected CMM3.6.0
    • affected CMM3.6.1
    • affected CMM3.7.0
    • affected CMM3.8.0
    • affected CMM3.9.0

What to do

Exploitation: The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

References (3)

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

CVE-2025-20156 badge
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Record last updated .