Is CVE-2025-55074 in the CISA KEV catalog?

No. CVE-2025-55074 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-55074?

CVE-2025-55074 has a CVSS v3 base score of 3.0 (LOW).

What is the EPSS score for CVE-2025-55074?

CVE-2025-55074 has an EPSS score of 0.14% (4th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-55074?

Upgrade mattermost server to 10.11.4 or later.

CVE & CISA-KEV Catalog

CVE-2025-55074

LOW

3.0

CVSS v3

NVD

Description

Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11 fail to enforce access permissions on the Agents plugin which allows other users to determine when users had read channels via channel member objects

How to fix

Remediation Available

mattermost serverNVD

Affected:>= 10.11.0, < 10.11.4Fixed in:10.11.4CVE-2025-55074derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredLow

User InteractionRequired

ScopeChanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:N

Exploit Intelligence

0.14%probability of exploitation in 30 days

4thpercentile

Low risk: more likely to be exploited than 4% of all known CVEs.

References

Vendor Advisory1

mattermost.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-25.