{"action":"Upgrade upx-ucl to 4.2.2-1 or later.","affected":[{"fixed":"4.2.2-1","introduced":"0"}],"component":"upx-ucl","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["4.2.2-1"],"id":"tcs_01M5NHWS9S2STHMKYS2VPTZFWP","modified_at":"2026-10-23T18:04:02.691812769Z","published_at":"2023-01-12T19:15:24.693Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2023-23456","https://security-tracker.debian.org/tracker/CVE-2023-23456"],"severity":{"label":"medium","score":5.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2023-23456#Debian:14/upx-ucl","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2023-23456"}],"summary":"A heap-based buffer overflow issue was discovered in UPX in PackTmt::pack() in p_tmt.cpp file. The flow allows an attacker to cause a denial of service (abort) via a crafted file."}