What is the severity of CVE-2025-0476?

CVE-2025-0476 is considered a high severity vulnerability due to the potential for app crashes affecting multiple users.

How do I fix CVE-2025-0476?

To fix CVE-2025-0476, update the Mattermost Mobile Apps to version 2.22.1 or later.

What versions of Mattermost Mobile Apps are affected by CVE-2025-0476?

Mattermost Mobile Apps versions up to and including 2.22.0 are affected by CVE-2025-0476.

What type of attack does CVE-2025-0476 enable?

CVE-2025-0476 enables an attacker to crash the Mattermost Mobile app for users who open a channel with a specially crafted attachment.

Is there a workaround for CVE-2025-0476 until I can update?

There is no documented workaround for CVE-2025-0476, so it is recommended to update to the fixed version as soon as possible.

Vulnerability/
CVE-2025-0476

medium

4.3

CWE

1287

EPSS

0.043%

15/1/2025

16/1/2025

CVE-2025-0476: Mobile crash via file with specially crafted filename

First published: Wed Jan 15 2025(Updated: )

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

Credit: responsibledisclosure@mattermost.com

Affected Software	Affected Version	How to fix
Mattermost	<=2.22.0

Remedy

Update Mattermost Mobile Apps to versions 2.23.0 or higher.

Never miss a vulnerability like this again

Reference Links

https://mattermost.com/security-updates

Frequently Asked Questions

What is the severity of CVE-2025-0476?
CVE-2025-0476 is considered a high severity vulnerability due to the potential for app crashes affecting multiple users.
How do I fix CVE-2025-0476?
To fix CVE-2025-0476, update the Mattermost Mobile Apps to version 2.22.1 or later.
What versions of Mattermost Mobile Apps are affected by CVE-2025-0476?
Mattermost Mobile Apps versions up to and including 2.22.0 are affected by CVE-2025-0476.
What type of attack does CVE-2025-0476 enable?
CVE-2025-0476 enables an attacker to crash the Mattermost Mobile app for users who open a channel with a specially crafted attachment.
Is there a workaround for CVE-2025-0476 until I can update?
There is no documented workaround for CVE-2025-0476, so it is recommended to update to the fixed version as soon as possible.

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