{"cve":"CVE-2005-0021","nvd":{"published":"2005-05-02T04:00:00.000","modified":"2026-06-16T22:10:22.370","status":"Modified","description":"Multiple buffer overflows in Exim before 4.43 may allow attackers to execute arbitrary code via (1) an IPv6 address with more than 8 components, as demonstrated using the -be command line option, which triggers an overflow in the host_aton function, or (2) the -bh command line option or dnsdb PTR lookup, which triggers an overflow in the dns_build_reverse function.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://ftp6.us.freebsd.org/pub/mail/exim/ChangeLogs/ChangeLog-4.44","http://security.gentoo.org/glsa/glsa-200501-23.xml","http://www.debian.org/security/2005/dsa-635","http://www.debian.org/security/2005/dsa-637","http://www.exim.org/mail-archives/exim-users/Week-of-Mon-20050103/msg00028.html"],"products":["university_of_cambridge:exim"],"source":"nvd","synced_at":"2026-10-19T19:38:22.000386253+00:00"},"epss":{"cve":"CVE-2005-0021","score":0.02618,"percentile":0.85447,"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."]}