Information disclosure in Mozilla Firefox
CVE-2025-11710
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.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (34.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- Mozilla Firefox — versions 115.29, 140.4, 144
- Mozilla Thunderbird — versions 140.4, 144
Weakness classification (CWE)
References
- bugzilla.mozilla.org/show_bug.cgi (Permissions Required, Issue Tracking)
- www.mozilla.org/security/advisories/mfsa2025-81/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2025-82/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2025-83/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2025-84/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2025-85/ (Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2025-11710?
- CVE-2025-11710 is a critical-severity vulnerability in Mozilla Firefox, classified under Information Disclosure. CVSS score: 9.8/10. Published 2025-10-14.
- How severe is CVE-2025-11710?
- Critical severity. CVSS v3 base score is 9.8 out of 10.