CVE-2025-0476

MEDIUMNVD 4.34.3—Trending — 4 sources updated this week

4.3

Mattermost Mobile Apps versions <=2.22.0 fail to properly handle specially crafted attachment names, which allows an attacker to crash the mobile app for any user who opened a channel containing the specially crafted attachment

CVSS v3: 4.3
EG Score: 4.3(medium)
EPSS: 55.9%
KEV: Not listed

Published

January 16, 2025

Last Modified

September 24, 2025

References (1)

responsibledisclosure@mattermosthttps://mattermost.com/security-updates

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-1287

Data Freshness Timeline

(refreshed 12× in last 7d / 12× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-30 13:14 UTCEG score recompute
2026-05-30 13:14 UTCGHSA enrichment
2026-05-30 06:50 UTCOSV refresh
2026-05-29 13:43 UTCepss_batch

Frequently asked(5)

What is CVE-2025-0476?

CVE-2025-0476 is a medium vulnerability published on January 16, 2025. Mattermost Mobile Apps versions <=2.22.0 fail to properly handle specially crafted attachment names, which allows an attacker to crash the mobile app for any user who opened a channel containing the specially crafted attachment

When was CVE-2025-0476 disclosed?

CVE-2025-0476 was first published in the National Vulnerability Database on January 16, 2025, with the most recent update on September 24, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2025-0476 actively exploited?

CVE-2025-0476 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 55.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2025-0476?

CVE-2025-0476 has a CVSS v3 base score of 4.3 (NVD).

How do I remediate CVE-2025-0476?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-0476, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-0476

Explore →

Is Your Infrastructure Affected by CVE-2025-0476?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2025-0476

📅 Published

🔄 Last Modified

🔗 References (1)