CVE-2025-1558: Denial of Service Via Malicious GIF

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-03-24 · updated 2026-06-17
Weakness: CWE-1287

Description

Mattermost Mobile Apps versions <=2.25.0 fail to properly validate GIF images prior to rendering which allows a malicious user to cause the Android application to crash via message containing a maliciously crafted GIF.

Affected products

Mattermost Mobile: before 2.25.1 — fixed in 2.25.1

How to fix

Upgrade to a fixed version: Mattermost Mobile 2.25.1. Check the vendor advisory for mitigations.

References

https://mattermost.com/security-updates

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