{"cve":"CVE-2011-1951","nvd":{"published":"2011-07-11T20:55:01.207","modified":"2026-06-16T23:30:27.320","status":"Modified","description":"lib/logmatcher.c in Balabit syslog-ng before 3.2.4, when the global flag is set and when using PCRE 8.12 and possibly other versions, allows remote attackers to cause a denial of service (memory consumption) via a message that does not match a regular expression.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-399"],"references":["http://git.balabit.hu/?p=bazsi/syslog-ng-3.2.git%3Ba=commit%3Bh=09710c0b105e579d35c7b5f6c66d1ea5e3a3d3ff","http://lists.fedoraproject.org/pipermail/package-announce/2011-June/062107.html","http://secunia.com/advisories/45122","http://www.openwall.com/lists/oss-security/2011/05/26/1","http://www.securityfocus.com/bid/47800"],"products":["oneidentity:syslog-ng"],"source":"nvd","synced_at":"2026-10-19T19:58:50.521460154+00:00"},"epss":{"cve":"CVE-2011-1951","score":0.02462,"percentile":0.84465,"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."]}