{"cve":"CVE-2005-2491","nvd":{"published":"2005-08-23T04:00:00.000","modified":"2026-06-16T22:14:59.680","status":"Modified","description":"Integer overflow in pcre_compile.c in Perl Compatible Regular Expressions (PCRE) before 6.2, as used in multiple products such as Python, Ethereal, and PHP, allows attackers to execute arbitrary code via quantifier values in regular expressions, which leads to a heap-based buffer overflow.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2006.10/SCOSA-2006.10.txt","ftp://patches.sgi.com/support/free/security/advisories/20060401-01-U","http://docs.info.apple.com/article.html?artnum=302847","http://itrc.hp.com/service/cki/docDisplay.do?docId=c00786522","http://lists.trustix.org/pipermail/tsl-announce/2005-October/000354.html"],"products":["pcre:pcre"],"source":"nvd","synced_at":"2026-10-19T19:39:29.870204089+00:00"},"epss":{"cve":"CVE-2005-2491","score":0.04344,"percentile":0.91218,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}