How severe is CVE-2025-0476?

CVE-2025-0476 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2025-0476 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-0476?

CVE-2025-0476 affects Mattermost Mattermost Mobile. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-0476?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-0476 have an EU (EUVD) identifier?

Yes. CVE-2025-0476 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-1700.

When was CVE-2025-0476 published?

CVE-2025-0476 was published on 2025-01-16 and last updated on 2026-06-17.

CVE-2025-0476

CVE-2025-0476 is a medium-severity vulnerability in Mattermost Mattermost Mobile with a CVSS 3.x base score of 4.3. 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-1287.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-1700
Weakness: CWE-1287
Affected product: Mattermost Mattermost Mobile
Published: 2025-01-16
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2025-0476?: 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
How severe is CVE-2025-0476?: CVE-2025-0476 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2025-0476 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-0476?: CVE-2025-0476 affects Mattermost Mattermost Mobile. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-0476?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-0476 have an EU (EUVD) identifier?: Yes. CVE-2025-0476 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-1700.
When was CVE-2025-0476 published?: CVE-2025-0476 was published on 2025-01-16 and last updated on 2026-06-17.

References

https://mattermost.com/security-updates

Affected products (1)

cpe:2.3:a:mattermost:mattermost_mobile:*:*:*:*:*:*:*:*

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