{"id":"CVE-2019-20021","details":"A heap-based buffer over-read was discovered in canUnpack in p_mach.cpp in UPX 3.95 via a crafted Mach-O file.","modified":"2026-04-09T06:40:15.326598Z","published":"2019-12-27T02:15:10.797Z","related":["MGASA-2020-0096","openSUSE-SU-2020:0163-1","openSUSE-SU-2020:0180-1","openSUSE-SU-2024:11486-1"],"references":[{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00003.html"},{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00007.html"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D7XU42G6MUQQXHWRP7DCF2JSIBOJ5GOO/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUTVSTXAFTD552NO2K2RIF6MDQEHP3BE/"},{"type":"REPORT","url":"https://github.com/upx/upx/issues/315"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/upx/upx","events":[{"introduced":"0"},{"last_affected":"7a3637ff5a800b8bcbad20ae7f668d8c8449b014"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"3.95"}]}}],"versions":["v1.10","v1.11","v1.90","v1.91","v1.92","v1.93","v1.94","v1.95","v1.96","v2.00","v2.01","v2.90","v2.91","v2.92","v2.93","v3.00","v3.01","v3.02","v3.03","v3.04","v3.06","v3.07","v3.09","v3.91","v3.92","v3.93","v3.95"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-20021.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"30"}]},{"events":[{"introduced":"0"},{"last_affected":"31"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"}]}