{"id":"CVE-2023-6863","details":"The `ShutdownObserver()` was susceptible to potentially undefined behavior due to its reliance on a dynamic type that lacked a virtual destructor. This vulnerability affects Firefox ESR \u003c 115.6, Thunderbird \u003c 115.6, and Firefox \u003c 121.","modified":"2026-04-16T00:02:12.604172712Z","published":"2023-12-19T14:15:07.650Z","related":["ALSA-2024:0001","ALSA-2024:0003","ALSA-2024:0012","ALSA-2024:0025","SUSE-SU-2023:4912-1","SUSE-SU-2023:4928-1","SUSE-SU-2023:4929-1","SUSE-SU-2024:0044-1","openSUSE-SU-2024:13519-1","openSUSE-SU-2024:13531-1","openSUSE-SU-2024:14572-1"],"references":[{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202401-10"},{"type":"ADVISORY","url":"https://www.debian.org/security/2023/dsa-5581"},{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2023-54/"},{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2023-55/"},{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2023-56/"},{"type":"REPORT","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1868901"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"121.0"}]},{"events":[{"introduced":"0"},{"fixed":"115.6"}]},{"events":[{"introduced":"0"},{"fixed":"115.6"}]},{"events":[{"introduced":"0"},{"last_affected":"10.0"}]},{"events":[{"introduced":"0"},{"last_affected":"11.0"}]},{"events":[{"introduced":"0"},{"last_affected":"12.0"}]}],"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-6863.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}