{"id":"CVE-2017-17969","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-17969","generatedAt":"2026-10-28T19:05:09.304Z","title":"Heap-based buffer overflow in the NCompress::NShrink::CDecoder::CodeReal method in 7-Zip before 18.00 and p7zip allows remote attackers to cause a denial of service (out-of-bounds write) or potentially execute arbitrary code via a crafted ZIP archive.","description":"Heap-based buffer overflow in the NCompress::NShrink::CDecoder::CodeReal method in 7-Zip before 18.00 and p7zip allows remote attackers to cause a denial of service (out-of-bounds write) or potentially execute arbitrary code via a crafted ZIP archive.","published":"2018-01-30T16:29:00.000Z","lastModified":"2026-06-17T01:11:58.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":7.8,"severity":"HIGH","vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":["CWE-787"],"affected":["7-zip/7-zip","7-zip/p7zip","debian/debian linux"],"epss":{"score":0.04991,"percentile":0.92178,"date":"2026-10-27","history":[{"date":"2026-09-21","score":0.07504,"percentile":0.94303},{"date":"2026-09-22","score":0.04938,"percentile":0.91754}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (4.99%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://www.securitytracker.com/id/1040831","source":"cve@mitre.org"},{"url":"https://0patch.blogspot.si/2018/02/two-interesting-micropatches-for-7-zip.html","source":"cve@mitre.org"},{"url":"https://github.com/p7zip-project/p7zip/issues/7","source":"cve@mitre.org"},{"url":"https://landave.io/2018/01/7-zip-multiple-memory-corruptions-via-rar-and-zip/","tags":["Exploit","Technical Description","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://lists.debian.org/debian-lts-announce/2018/02/msg00003.html","tags":["Mailing List","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3913-1/","source":"cve@mitre.org"},{"url":"https://www.debian.org/security/2018/dsa-4104","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://www.securitytracker.com/id/1040831","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://0patch.blogspot.si/2018/02/two-interesting-micropatches-for-7-zip.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://landave.io/2018/01/7-zip-multiple-memory-corruptions-via-rar-and-zip/","tags":["Exploit","Technical Description","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2018/02/msg00003.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3913-1/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2018/dsa-4104","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-17969","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}