{"id":"CVE-2017-18184","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-18184","generatedAt":"2026-10-29T00:48:22.953Z","title":"There is a stack-based out-of-bounds read in the function iterate_rc4 in QPDF_encryption.cc.","description":"An issue was discovered in QPDF before 7.0.0. There is a stack-based out-of-bounds read in the function iterate_rc4 in QPDF_encryption.cc.","published":"2018-02-13T19:29:00.000Z","lastModified":"2026-06-17T01:12:21.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":5.5,"severity":"MEDIUM","vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},"cwe":["CWE-125"],"affected":["qpdf project/qpdf"],"epss":{"score":0.00668,"percentile":0.51687,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.67%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/qpdf/qpdf/commit/dea704f0ab7f625e1e7b3f9a1110b45b63157317","tags":["Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/qpdf/qpdf/issues/147","tags":["Issue Tracking","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3638-1/","source":"cve@mitre.org"},{"url":"https://github.com/qpdf/qpdf/commit/dea704f0ab7f625e1e7b3f9a1110b45b63157317","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/qpdf/qpdf/issues/147","tags":["Issue Tracking","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3638-1/","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-18184","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."}