{"id":"CVE-2021-1799","details":"A port redirection issue was addressed with additional port validation. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, tvOS 14.4, watchOS 7.3, iOS 14.4 and iPadOS 14.4, Safari 14.0.3. A malicious website may be able to access restricted ports on arbitrary servers.","modified":"2026-04-15T23:59:13.837017457Z","published":"2021-04-02T19:15:19.617Z","related":["ALSA-2021:4381","SUSE-SU-2021:1430-1","SUSE-SU-2021:1499-1","SUSE-SU-2021:1990-1","openSUSE-SU-2021:0637-1"],"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JN6ZOD62CTO54CHTMJTHVEF6R2Y532TJ/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202104-03"},{"type":"ADVISORY","url":"https://support.apple.com/en-us/HT212146"},{"type":"ADVISORY","url":"https://support.apple.com/en-us/HT212147"},{"type":"ADVISORY","url":"https://support.apple.com/en-us/HT212148"},{"type":"ADVISORY","url":"https://support.apple.com/en-us/HT212149"},{"type":"ADVISORY","url":"https://support.apple.com/en-us/HT212152"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"14.0.3"}]},{"events":[{"introduced":"0"},{"fixed":"14.4"}]},{"events":[{"introduced":"0"},{"fixed":"14.4"}]},{"events":[{"introduced":"11.0.1"},{"fixed":"11.2"}]},{"events":[{"introduced":"0"},{"fixed":"14.4"}]},{"events":[{"introduced":"0"},{"fixed":"7.3"}]},{"events":[{"introduced":"0"},{"last_affected":"32"}]},{"events":[{"introduced":"0"},{"last_affected":"33"}]},{"events":[{"introduced":"0"},{"fixed":"2.30.6"}]}],"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-1799.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:N/I:H/A:N"}]}