{"id":"CVE-2002-0059","aliases":["EUVD-2002-0059","GHSA-8894-p74v-5485"],"status":"published","title":"The decompression algorithm in zlib 1.1.3 and earlier, as used in many different utilities and...","description":"The decompression algorithm in zlib 1.1.3 and earlier, as used in many different utilities and packages, causes inflateEnd to release certain memory more than once (a \"double free\"), which may allow local and remote attackers to execute arbitrary code via a block of malformed compression data.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.09691,"percentile":0.95539,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-415"],"published":"2002-03-15T05:00:00Z","modified":"2026-06-16T21:56:40Z","products":[{"vendor":"zlib","product":"zlib"}],"references":[{"url":"http://www.cert.org/advisories/CA-2002-07.html","tags":["third-party-advisory","x_refsource_CERT","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"http://frontal2.mandriva.com/security/advisories?name=MDKSA-2002:022","tags":["vendor-advisory","x_refsource_MANDRAKE","x_transferred","Broken Link"]},{"url":"http://www.securityfocus.com/bid/4267","tags":["vdb-entry","x_refsource_BID","x_transferred","Broken Link","Third Party Advisory","VDB Entry"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/8427","tags":["vdb-entry","x_refsource_XF","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://www1.itrc.hp.com/service/cki/docDisplay.do?docId=HPSBTL0204-030","tags":["vendor-advisory","x_refsource_HP","x_transferred","Broken Link"]},{"url":"http://distro.conectiva.com.br/atualizacoes/?id=a\u0026anuncio=000469","tags":["vendor-advisory","x_refsource_CONECTIVA","x_transferred","Broken Link"]},{"url":"http://www.linux-mandrake.com/en/security/2002/MDKSA-2002-023.php","tags":["vendor-advisory","x_refsource_MANDRAKE","x_transferred","Broken Link","Patch","Vendor Advisory"]},{"url":"http://www.debian.org/security/2002/dsa-122","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Broken Link"]},{"url":"ftp://ftp.caldera.com/pub/security/OpenLinux/CSSA-2002-015.1.txt","tags":["vendor-advisory","x_refsource_CALDERA","x_transferred","Broken Link"]},{"url":"http://www.linux-mandrake.com/en/security/2002/MDKSA-2002-024.php3","tags":["vendor-advisory","x_refsource_MANDRAKE","x_transferred","Broken Link"]},{"url":"http://www.kb.cert.org/vuls/id/368819","tags":["third-party-advisory","x_refsource_CERT-VN","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"http://www.redhat.com/support/errata/RHSA-2002-027.html","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred","Broken Link","Patch","Vendor Advisory"]},{"url":"http://www.caldera.com/support/security/advisories/CSSA-2002-014.1.txt","tags":["vendor-advisory","x_refsource_CALDERA","x_transferred","Broken Link"]},{"url":"http://www1.itrc.hp.com/service/cki/docDisplay.do?docId=HPSBTL0204-036","tags":["vendor-advisory","x_refsource_HP","x_transferred","Broken Link"]},{"url":"http://www.redhat.com/support/errata/RHSA-2002-026.html","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred","Broken Link","Patch","Vendor Advisory"]},{"url":"http://www1.itrc.hp.com/service/cki/docDisplay.do?docId=HPSBTL0204-037","tags":["vendor-advisory","x_refsource_HP","x_transferred","Broken Link"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2002-0059"},{"url":"https://github.com/advisories/GHSA-8894-p74v-5485"}],"sources":{"cve":[{"id":"CVE-2002-0059","description":"The decompression algorithm in zlib 1.1.3 and earlier, as used in many different utilities and packages, causes inflateEnd to release certain memory more than once (a \"double free\"), which may allow local and remote attackers to execute arbitrary code via a block of malformed compression data.","status":"published","published":"2002-06-25T04:00:00Z","modified":"2024-08-08T02:35:17.4Z","updated_at":"2026-11-02T14:33:55.642267Z"}],"euvd":[{"id":"EUVD-2002-0059","description":"The decompression algorithm in zlib 1.1.3 and earlier, as used in many different utilities and packages, causes inflateEnd to release certain memory more than once (a \"double free\"), which may allow local and remote attackers to execute arbitrary code via a block of malformed compression data.","status":"published","published":"2002-06-25T04:00:00Z","modified":"2024-08-08T02:35:17Z","updated_at":"2026-11-03T01:15:02.530408Z"}],"ghsa":[{"id":"GHSA-8894-p74v-5485","title":"The decompression algorithm in zlib 1.1.3 and earlier, as used in many different utilities and...","description":"The decompression algorithm in zlib 1.1.3 and earlier, as used in many different utilities and packages, causes inflateEnd to release certain memory more than once (a \"double free\"), which may allow local and remote attackers to execute arbitrary code via a block of malformed compression data.","status":"published","published":"2022-05-03T03:07:47Z","modified":"2023-02-01T05:01:01Z","updated_at":"2026-11-02T14:49:39.185404Z"}],"nvd":[{"id":"CVE-2002-0059","description":"The decompression algorithm in zlib 1.1.3 and earlier, as used in many different utilities and packages, causes inflateEnd to release certain memory more than once (a \"double free\"), which may allow local and remote attackers to execute arbitrary code via a block of malformed compression data.","status":"published","published":"2002-03-15T05:00:00Z","modified":"2026-06-16T21:56:40.957Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-415"],"updated_at":"2026-11-02T14:00:41.313877Z"}]}}