CVE-2025-1935

4.3 MEDIUM

Published: March 04, 2025 Modified: April 13, 2026

Description

A web page could trick a user into setting that site as the default handler for a custom URL protocol. This vulnerability was fixed in Firefox 136, Firefox ESR 128.8, Thunderbird 136, and Thunderbird 128.8.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://bugzilla.mozilla.org/show_bug.cgi?id=1866661

Source: security@mozilla.org

Issue Tracking

https://www.mozilla.org/security/advisories/mfsa2025-14/

Source: security@mozilla.org

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2025-16/

Source: security@mozilla.org

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2025-17/

Source: security@mozilla.org

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2025-18/

Source: security@mozilla.org

Vendor Advisory

https://lists.debian.org/debian-lts-announce/2025/03/msg00006.html

Source: af854a3a-2127-422b-91ae-364da2661108

6 reference(s) from NVD

Quick Stats

CVSS v3 Score

4.3 / 10.0

EPSS (Exploit Probability)

0.2%

45th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-79

Affected Vendors

mozilla

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