{"action":"Upgrade upx to 4.0.0-r0 or later.","affected":[{"fixed":"4.0.0-r0","introduced":"0"}],"component":"upx","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.24","exploited":false,"fixed_versions":["4.0.0-r0"],"id":"tcs_01M6GNVMKY41PNNZZTFSDAHJ2C","modified_at":"2026-11-03T06:32:28.428658642Z","published_at":"2021-05-27T00:15:08.483Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2021-30500","https://security.alpinelinux.org/vuln/CVE-2021-30500"],"severity":{"label":"high","score":7.8},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2021-30500#Alpine:v3.24/upx","url":"https://osv.dev/vulnerability/ALPINE-CVE-2021-30500"}],"summary":"Null pointer dereference was found in upx PackLinuxElf::canUnpack() in p_lx_elf.cpp,in version UPX 4.0.0. That allow attackers to execute arbitrary code and cause a denial of service via a crafted fil"}