Out-of-Bounds Affecting firefox package, versions <144.0-1


Severity

Recommended
0.0
critical
0
10

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  • Snyk IDSNYK-DEBIANUNSTABLE-FIREFOX-13550644
  • published15 Oct 2025
  • disclosed14 Oct 2025

Introduced: 14 Oct 2025

NewCVE-2025-11721  (opens in a new tab)
CWE-119  (opens in a new tab)

How to fix?

Upgrade Debian:unstable firefox to version 144.0-1 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.

Memory safety bug present in Firefox 143 and Thunderbird 143. This bug showed evidence of memory corruption and we presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Firefox < 144 and Thunderbird < 144.

CVSS Base Scores

version 3.1