{"cve":"CVE-2009-4022","nvd":{"published":"2009-11-25T16:30:00.937","modified":"2026-06-16T23:12:51.047","status":"Modified","description":"Unspecified vulnerability in ISC BIND 9.0.x through 9.3.x, 9.4 before 9.4.3-P4, 9.5 before 9.5.2-P1, 9.6 before 9.6.1-P2, and 9.7 beta before 9.7.0b3, with DNSSEC validation enabled and checking disabled (CD), allows remote attackers to conduct DNS cache poisoning attacks by receiving a recursive client query and sending a response that contains an Additional section with crafted data, which is not properly handled when the response is processed \"at the same time as requesting DNSSEC records (DO),\" aka Bug 20438.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["ftp://ftp.sco.com/pub/unixware7/714/security/p535243_uw7/p535243b.txt","http://aix.software.ibm.com/aix/efixes/security/bind9_advisory.asc","http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html","http://lists.vmware.com/pipermail/security-announce/2010/000082.html","http://osvdb.org/60493"],"products":["isc:bind"],"source":"nvd","synced_at":"2026-10-19T19:54:26.868835795+00:00"},"epss":{"cve":"CVE-2009-4022","score":0.07952,"percentile":0.94741,"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."]}