CVE-2025-11710

Name: CVE-2025-11710
Creator: NVD / NIST
Published: 2025-10-14T13:15:37.203+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.39%

Last modified Jun 17, 2026

CVE-2025-11710 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 0.39% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.39%

30.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 115.29.0
Mozilla	Firefox	< 144.0
Mozilla	Firefox	>= 116.0, < 140.4.0
Mozilla	Thunderbird	< 140.4.0
Mozilla	Thunderbird	>= 141.0, < 144.0

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1989899Issue Tracking, Permissions Required
https://www.mozilla.org/security/advisories/mfsa2025-81/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-82/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-83/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-84/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-85/Vendor Advisory
https://lists.debian.org/debian-lts-announce/2025/10/msg00015.html
https://lists.debian.org/debian-lts-announce/2025/10/msg00031.html

Timeline

Published: Oct 14, 2025
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2025-11710?

How severe is CVE-2025-11710?

CVE-2025-11710 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.39% probability of exploitation in the next 30 days.

How do I fix CVE-2025-11710?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-11710?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST