{"id":"CVE-2018-18651","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-18651","generatedAt":"2026-10-29T01:55:03.570Z","title":"An issue was discovered in Xpdf 4.00. catalog->getNumPages() in AcroForm.cc allows attackers to launch a denial of service (hang caused by large loop) via a specific pdf file, as demonstrated by pdftohtml.","description":"An issue was discovered in Xpdf 4.00. catalog->getNumPages() in AcroForm.cc allows attackers to launch a denial of service (hang caused by large loop) via a specific pdf file, as demonstrated by pdftohtml. This is mainly caused by a large number after the /Count field in the file.","published":"2018-10-25T13:29:00.000Z","lastModified":"2026-06-17T01:47:39.000Z","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-834"],"affected":["xpdfreader/xpdf"],"epss":{"score":0.00933,"percentile":0.60541,"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 (0.93%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://forum.xpdfreader.com/viewtopic.php?f=3&t=41219&p=41747#p41747","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/152005","tags":["Third Party Advisory"],"source":"nvd@nist.gov"},{"url":"https://forum.xpdfreader.com/viewtopic.php?f=3&t=41219&p=41747#p41747","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-18651","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."}