{"action":"Upgrade upx-ucl to 3.96-1 or later.","affected":[{"fixed":"3.96-1","introduced":"0"}],"component":"upx-ucl","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["3.96-1"],"id":"tcs_01M5NE463P6J5E6CAB744Q7H2F","modified_at":"2026-09-21T07:01:18.754257309Z","published_at":"2019-12-27T22:15:11.923Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2019-20053","https://security-tracker.debian.org/tracker/CVE-2019-20053"],"severity":{"label":"medium","score":5.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2019-20053","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2019-20053"}],"summary":"An invalid memory address dereference was discovered in the canUnpack function in p_mach.cpp in UPX 3.95 via a crafted Mach-O file."}