CVE-2025-55035

MEDIUM EPSS 21.6%
Published Oct 16, 20258mo ago · Modified Jun 17, 20262w ago
6.1 CVSS 3.1
Medium
Find Similar
Published Oct 16, 2025 8mo ago
Last Modified Jun 17, 2026 2w ago

Description

Mattermost Desktop App versions <=5.13.0 fail to manage modals in the Mattermost Desktop App that stops a user with a server that uses basic authentication from accessing their server which allows an attacker that provides a malicious server to the user to deny use of the Desktop App via having the user configure the malicious server and forcing a modal popup that cannot be closed.

CVSS Details

Base Score
6.1
Exploitability
1.6
Impact
4.0
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
21.6% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-754

Affected Products 1

VendorProductVersionRange
mattermostmattermost_desktop* <5.13.1.0

References 1

  • mattermost.com https://mattermost.com/security-updates
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.