CVE-2025-11710 Affecting firefox-esr package, versions <140.4.0esr-1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.11% (29th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-FIREFOXESR-13550675
  • published15 Oct 2025
  • disclosed14 Oct 2025

Introduced: 14 Oct 2025

CVE-2025-11710  (opens in a new tab)

How to fix?

Upgrade Debian:unstable firefox-esr to version 140.4.0esr-1 or higher.

NVD Description

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

A compromised web process using malicious IPC messages could have caused the privileged browser process to reveal blocks of its memory to the compromised process. This vulnerability was fixed in Firefox 144, Firefox ESR 115.29, Firefox ESR 140.4, Thunderbird 144, and Thunderbird 140.4.

CVSS Base Scores

version 3.1