{"cve":"CVE-2002-1221","nvd":{"published":"2002-11-29T05:00:00.000","modified":"2026-06-16T21:58:57.433","status":"Modified","description":"BIND 8.x through 8.3.3 allows remote attackers to cause a denial of service (crash) via SIG RR elements with invalid expiry times, which are removed from the internal BIND database and later cause a null dereference.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://bvlive01.iss.net/issEn/delivery/xforce/alertdetail.jsp?oid=21469","http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000546","http://lists.apple.com/archives/Security-announce/2002/Nov/msg00000.html","http://marc.info/?l=bugtraq&m=103713117612842&w=2","http://marc.info/?l=bugtraq&m=103763574715133&w=2"],"products":["freebsd:freebsd","isc:bind","openbsd:openbsd"],"source":"nvd","synced_at":"2026-10-19T19:34:38.930894741+00:00"},"epss":{"cve":"CVE-2002-1221","score":0.07573,"percentile":0.9453,"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."]}