{"id":"CVE-2021-30851","details":"A memory corruption vulnerability was addressed with improved locking. This issue is fixed in Safari 15, tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing maliciously crafted web content may lead to code execution.","modified":"2026-03-15T21:59:03.804346Z","published":"2021-08-24T19:15:13.373Z","related":["ALSA-2022:1777","MGASA-2021-0498","SUSE-SU-2021:3769-1","SUSE-SU-2021:3861-1","SUSE-SU-2021:3874-1","SUSE-SU-2022:0142-1","SUSE-SU-2022:0182-1","SUSE-SU-2022:0182-2","SUSE-SU-2022:0183-1","openSUSE-SU-2021:1557-1","openSUSE-SU-2021:3874-1","openSUSE-SU-2022:0182-1"],"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2021/10/31/1"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ON5SDVVPVPCAGFPW2GHYATZVZYLPW2L4/"},{"type":"WEB","url":"https://support.apple.com/en-us/HT212814"},{"type":"WEB","url":"https://support.apple.com/en-us/HT212819"},{"type":"WEB","url":"https://support.apple.com/kb/HT212869"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H6MGXCX7P5AHWOQ6IRT477UKT7IS4DAD/"},{"type":"WEB","url":"https://support.apple.com/en-us/HT212815"},{"type":"WEB","url":"https://support.apple.com/en-us/HT212816"},{"type":"ADVISORY","url":"https://www.debian.org/security/2021/dsa-4995"},{"type":"ADVISORY","url":"https://www.debian.org/security/2021/dsa-4996"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"15.0"}]},{"events":[{"introduced":"0"},{"fixed":"15.0"}]},{"events":[{"introduced":"0"},{"fixed":"15.0"}]},{"events":[{"introduced":"0"},{"fixed":"12.0.1"}]},{"events":[{"introduced":"0"},{"last_affected":"12.0.1"}]},{"events":[{"introduced":"0"},{"fixed":"15.0"}]},{"events":[{"introduced":"0"},{"fixed":"8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"10.0"}]},{"events":[{"introduced":"0"},{"last_affected":"11.0"}]},{"events":[{"introduced":"0"},{"last_affected":"33"}]},{"events":[{"introduced":"0"},{"last_affected":"34"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-30851.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"}]}