Is CVE-2025-55035 actively exploited?

CVE-2025-55035 has no public evidence of in-the-wild exploitation as of 2025-10-29.

What is the CVSS score for CVE-2025-55035?

CVE-2025-55035 has a CVSS score of 6.1 (MEDIUM severity). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:H.

How do I patch CVE-2025-55035?

Patch guidance is available from mattermost security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2025-55035.

Which products are affected by CVE-2025-55035?

1 product: mattermost mattermost desktop.

CVE-2025-55035 - remediation guidance & executive summary

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 Metrics

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:H
Attack Vector: network
Complexity: high
Privileges: none
User Action: required
Scope: changed
Confidentiality: none
Integrity: none
Availability: high
Weaknesses: CWE-754

Metadata

Primary Vendor: MATTERMOST
Published: 10/16/2025
Last Modified: 10/29/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

mattermost : mattermost_desktop

Remediation Guidance

Executive Summary

Cite this page

CVE-2025-55035. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2025-55035

View on NIST NVD

CVE-2025-55035 vulnerability