CVE-2025-4083 Affecting firefox package, versions <138.0-1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

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  • Snyk IDSNYK-DEBIANUNSTABLE-FIREFOX-9910186
  • published1 May 2025
  • disclosed29 Apr 2025

Introduced: 29 Apr 2025

NewCVE-2025-4083  (opens in a new tab)

How to fix?

Upgrade Debian:unstable firefox to version 138.0-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

A process isolation vulnerability in Thunderbird stemmed from improper handling of javascript: URIs, which could allow content to execute in the top-level document's process instead of the intended frame, potentially enabling a sandbox escape. This vulnerability affects Firefox < 138, Firefox ESR < 128.10, Firefox ESR < 115.23, Thunderbird < 138, and Thunderbird < 128.10.

CVSS Base Scores

version 3.1