CVE-2025-1942 Affecting firefox package, versions <136.0+build3-0ubuntu0.20.04.1


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.46% (38th percentile)

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  • Snyk IDSNYK-UBUNTU2004-FIREFOX-9295762
  • published6 Mar 2025
  • disclosed4 Mar 2025

Introduced: 4 Mar 2025

CVE-2025-1942  (opens in a new tab)

How to fix?

Upgrade Ubuntu:20.04 firefox to version 136.0+build3-0ubuntu0.20.04.1 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 Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

When String.toUpperCase() caused a string to get longer it was possible for uninitialized memory to be incorporated into the result string. This vulnerability was fixed in Firefox 136 and Thunderbird 136.

CVSS Base Scores

version 3.1