{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-14T06:52:42.816","vulnerabilities":[{"cve":{"id":"CVE-2021-20285","sourceIdentifier":"secalert@redhat.com","published":"2021-03-26T17:15:13.140","lastModified":"2025-04-11T12:27:55.013","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"A flaw was found in upx canPack in p_lx_elf.cpp in UPX 3.96. This flaw allows attackers to cause a denial of service (SEGV or buffer overflow and application crash) or possibly have unspecified other impacts via a crafted ELF. The highest threat from this vulnerability is to system availability."},{"lang":"es","value":"Se detectó un fallo en upx canPack en el archivo p_lx_elf.cpp en UPX versión 3.96. Este fallo permite a atacantes causar una denegación de servicio (SEGV o desbordamiento de búfer y bloqueo de la aplicación) o posiblemente tener otros impactos no especificados por medio de un ELF diseñado. La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema."}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H","baseScore":6.6,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":4.7}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:P/I:P/A:C","baseScore":8.3,"accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"COMPLETE"},"baseSeverity":"HIGH","exploitabilityScore":8.6,"impactScore":8.5,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":true}]},"weaknesses":[{"source":"secalert@redhat.com","type":"Secondary","description":[{"lang":"en","value":"CWE-119"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-787"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:upx:upx:3.96:*:*:*:*:*:*:*","matchCriteriaId":"AF2AC603-0693-418E-AA91-8942C20109C3"}]}]}],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1937787","source":"secalert@redhat.com","tags":["Issue Tracking","Third Party Advisory"]},{"url":"https://github.com/upx/upx/issues/421","source":"secalert@redhat.com","tags":["Exploit","Issue Tracking","Third Party Advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1937787","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking","Third Party Advisory"]},{"url":"https://github.com/upx/upx/issues/421","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Issue Tracking","Third Party Advisory"]}]}}]}