CVE-2025-11710
CRITICAL severity · CVSS 9.8 · Information disclosure
9.8CVSS CRITICAL
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products we track (2)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://www.mozilla.org/security/advisories/mfsa2025-81/Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-82/Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-83/Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-84/Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-85/Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1989899
- https://lists.debian.org/debian-lts-announce/2025/10/msg00015.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00031.html