Is CVE-2025-20630 in the CISA KEV catalog?

No. CVE-2025-20630 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-20630?

CVE-2025-20630 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2025-20630?

CVE-2025-20630 has an EPSS score of 0.59% (44th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-20630?

Upgrade mattermost mobile to 2.23.0 or later.

CVE & CISA-KEV Catalog

CVE-2025-20630

MEDIUM

6.5

CVSS v3

NVD

Description

Mattermost Mobile versions <=2.22.0 fail to properly handle posts with attachments containing fields that cannot be cast to a String, which allows an attacker to cause the mobile to crash via creating and sending such a post to a channel.

CWE-1287Improper Validation of Specified Type of Input

How to fix

Remediation Available

mattermost mobileNVD

Affected:< 2.23.0Fixed in:2.23.0CVE-2025-20630derived 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 ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.59%probability of exploitation in 30 days

44thpercentile

Moderate risk: more likely to be exploited than 44% 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 2025-09-24.