{"cve":"CVE-2015-3217","nvd":{"published":"2016-12-13T16:59:02.220","modified":"2026-06-17T00:25:33.513","status":"Modified","description":"PCRE 7.8 and 8.32 through 8.37, and PCRE2 10.10 mishandle group empty matches, which might allow remote attackers to cause a denial of service (stack-based buffer overflow) via a crafted regular expression, as demonstrated by /^(?:(?(1)\\\\.|([^\\\\\\\\W_])?)+)+$/.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-119"],"references":["http://rhn.redhat.com/errata/RHSA-2016-1025.html","http://rhn.redhat.com/errata/RHSA-2016-2750.html","http://vcs.pcre.org/pcre?view=revision&revision=1566","http://www-01.ibm.com/support/docview.wss?uid=isg3T1023886","http://www.openwall.com/lists/oss-security/2015/06/03/7"],"products":["ibm:powerkvm","pcre:pcre","pcre:pcre2"],"source":"nvd","synced_at":"2026-10-19T20:41:25.729257544+00:00"},"epss":{"cve":"CVE-2015-3217","score":0.06169,"percentile":0.93486,"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."]}