How severe is CVE-2025-20156?

CVE-2025-20156 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-20156 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-20156?

CVE-2025-20156 affects Cisco Meeting Management. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-20156?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-20156 have an EU (EUVD) identifier?

Yes. CVE-2025-20156 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-2156.

When was CVE-2025-20156 published?

CVE-2025-20156 was published on 2025-01-22 and last updated on 2026-06-17.

CVE-2025-20156

CVE-2025-20156 is a critical-severity vulnerability in Cisco Meeting Management with a CVSS 3.x base score of 9.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-274.

Key facts

Severity: Critical (CVSS 3.x base score 9.9)
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-2156
Weakness: CWE-274
Affected product: Cisco Meeting Management
Published: 2025-01-22
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-20156?: 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.
How severe is CVE-2025-20156?: CVE-2025-20156 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-20156 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-20156?: CVE-2025-20156 affects Cisco Meeting Management. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-20156?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-20156 have an EU (EUVD) identifier?: Yes. CVE-2025-20156 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-2156.
When was CVE-2025-20156 published?: CVE-2025-20156 was published on 2025-01-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:cisco:meeting_management:*:*:*:*:*:*:*:*

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