Description
Integer overflow in the Libraries component in NSS. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, Thunderbird 140.8, and Firefox ESR 115.35.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Mozilla Firefox
115.35 to ≤ 115.*unaffected140.8 to ≤ 140.*unaffected148 to ≤ *unaffected
Mozilla Thunderbird
140.8 to ≤ 140.*unaffected148 to ≤ *unaffected
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2009552 ↗
- https://www.mozilla.org/security/advisories/mfsa2026-13/ ↗
- https://www.mozilla.org/security/advisories/mfsa2026-15/ ↗
- https://www.mozilla.org/security/advisories/mfsa2026-16/ ↗
- https://www.mozilla.org/security/advisories/mfsa2026-17/ ↗
- https://www.mozilla.org/security/advisories/mfsa2026-31/ ↗
- https://lists.debian.org/debian-lts-announce/2026/03/msg00012.html ↗