CVE-2025-11710
9.8
CRITICAL
CVSS 3.1
EPSS 0.11%
Description
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.
How to fix CVE-2025-11710
To remediate CVE-2025-11710, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 140.4.0esr-1~deb11u1 or later
- —upgrade to 1:140.4.0esr-1~deb11u1 or later
Is CVE-2025-11710 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 140.4.0esr-1~deb11u1
- from 0, < 1:140.4.0esr-1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |