{"cve":"CVE-2009-4893","nvd":{"published":"2010-06-15T14:04:26.233","modified":"2026-06-16T23:14:33.357","status":"Modified","description":"Buffer overflow in UnrealIRCd 3.2beta11 through 3.2.8, when allow::options::noident is enabled, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified vectors.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-119"],"references":["http://security.gentoo.org/glsa/glsa-201006-21.xml","http://www.openwall.com/lists/oss-security/2010/06/14/13","http://www.securityfocus.com/bid/42077","http://www.unrealircd.com/txt/unrealsecadvisory.20090413.txt","http://security.gentoo.org/glsa/glsa-201006-21.xml"],"products":["unrealircd:unrealircd"],"source":"nvd","synced_at":"2026-10-19T19:56:26.512081652+00:00"},"epss":{"cve":"CVE-2009-4893","score":0.02512,"percentile":0.84783,"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."]}