Mozilla developers and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 108 and Firefox ESR 102.6. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 109, Firefox ESR < 102.7, and Thunderbird < 102.7.
Fix
Patch, vendor advisory and mitigation references on NVD 6
- https://www.mozilla.org/security/advisories/mfsa2023-01/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-02/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-03/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-01/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-02/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-03/ Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 8.8 · mozillaNVD modified 2026-10-24 13:10
Affected (CPE criteria) 3
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
References 8
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1764921%2C1802690%2C1806974 Broken Link, Issue Tracking, Not Applicable
- https://www.mozilla.org/security/advisories/mfsa2023-01/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-02/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-03/ Vendor Advisory
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1764921%2C1802690%2C1806974 Broken Link, Issue Tracking, Not Applicable
- https://www.mozilla.org/security/advisories/mfsa2023-01/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-02/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-03/ Vendor Advisory