{"id":"CVE-2020-27787","aliases":["DEBIAN-CVE-2020-27787","EUVD-2020-20289","GHSA-4rhf-85wr-9pxc","UBUNTU-CVE-2020-27787"],"status":"published","title":"A Segmentaation fault was found in UPX in invert_pt_dynamic() function in p_lx_elf.cpp. An...","description":"A Segmentaation fault was found in UPX in invert_pt_dynamic() function in p_lx_elf.cpp. An attacker with a crafted input file allows invalid memory address access that could lead to a denial of service.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00413,"percentile":0.3593,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-119"],"published":"2022-08-18T18:34:49Z","modified":"2026-10-26T12:01:07Z","fixes":[{"ecosystem":"Debian:13","package":"upx-ucl","fixed_in":["3.96-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"upx-ucl","fixed_in":["3.96-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:13","package":"upx-ucl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.96-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"upx-ucl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.96-1"}]}]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"upx-ucl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.91-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"upx-ucl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.94-2","3.94-3","3.94-4"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"upx-ucl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.95-2","3.95-2build1"]}],"products":[{"vendor":"upx","product":"upx"}],"references":[{"url":"https://github.com/upx/upx/issues/333","tags":["x_refsource_MISC","x_transferred","Exploit","Issue 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service.","status":"published","published":"2022-08-18T18:34:49Z","modified":"2024-08-04T16:25:42.439Z","cwes":["CWE-119"],"updated_at":"2026-11-02T14:35:53.552996Z"}],"euvd":[{"id":"EUVD-2020-20289","description":"A Segmentaation fault was found in UPX in invert_pt_dynamic() function in p_lx_elf.cpp. An attacker with a crafted input file allows invalid memory address access that could lead to a denial of service.","status":"published","published":"2022-08-18T18:34:49Z","modified":"2024-08-04T16:25:42Z","updated_at":"2026-11-03T03:07:11.950168Z"}],"ghsa":[{"id":"GHSA-4rhf-85wr-9pxc","title":"A Segmentaation fault was found in UPX in invert_pt_dynamic() function in p_lx_elf.cpp. An...","description":"A Segmentaation fault was found in UPX in invert_pt_dynamic() function in p_lx_elf.cpp. An attacker with a crafted input file allows invalid memory address access that could lead to a denial of 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input file allows invalid memory address access that could lead to a denial of service.","status":"published","published":"2022-08-18T19:15:00Z","modified":"2025-10-24T04:48:52Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:24.541803Z"}]}}