Certificate length was not properly checked when added to a certificate store. In practice only trusted data was processed. This vulnerability affects Firefox < 135, Firefox ESR < 128.7, Thunderbird < 128.7, and Thunderbird < 135.CreditsTheemathasReferenceshttps://bugzilla.mozilla.org/show_bug.cgi?id=1940804https://www.mozilla.org/security/advisories/mfsa2025-07/https://www.mozilla.org/security/advisories/mfsa2025-09/https://www.mozilla.org/security/advisories/mfsa2025-10/https://www.mozilla.org/security/advisories/mfsa2025-11/
