{"id":"CVE-2017-8786","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-8786","generatedAt":"2026-10-28T21:19:25.700Z","title":"pcre2test.c in PCRE2 10.23 allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via a crafted regular expression.","description":"pcre2test.c in PCRE2 10.23 allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via a crafted regular expression.","published":"2017-05-05T00:29:00.000Z","lastModified":"2026-06-17T01:26:58.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-119"],"affected":["pcre/pcre2"],"epss":{"score":0.04066,"percentile":0.90613,"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":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (4.07%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://blogs.gentoo.org/ago/2017/04/29/libpcre-heap-based-buffer-overflow-write-in-pcre2test-c/","tags":["Exploit","Patch","Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"https://bugs.exim.org/show_bug.cgi?id=2079","tags":["Exploit","Issue Tracking","Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"https://security.gentoo.org/glsa/201710-09","source":"cve@mitre.org"},{"url":"https://vcs.pcre.org/pcre2?view=revision&revision=696","tags":["Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://vcs.pcre.org/pcre2?view=revision&revision=697","tags":["Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://blogs.gentoo.org/ago/2017/04/29/libpcre-heap-based-buffer-overflow-write-in-pcre2test-c/","tags":["Exploit","Patch","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugs.exim.org/show_bug.cgi?id=2079","tags":["Exploit","Issue Tracking","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/201710-09","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://vcs.pcre.org/pcre2?view=revision&revision=696","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://vcs.pcre.org/pcre2?view=revision&revision=697","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-8786","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."}