{"affected":[{"conditional":false,"product":"bind","source":"NVD","vendor":"isc","versions":[{"greaterThanOrEqual":"9.20.0","lessThanOrEqual":"9.20.24","status":"affected","version":"*","versionType":"custom"}]},{"conditional":false,"product":"bind","source":"NVD","vendor":"isc","versions":[{"greaterThanOrEqual":"9.20.9","lessThanOrEqual":"9.20.24","status":"affected","version":"*","versionType":"custom"}]},{"conditional":false,"product":"bind","source":"NVD","vendor":"isc","versions":[{"greaterThanOrEqual":"9.21.0","lessThanOrEqual":"9.21.23","status":"affected","version":"*","versionType":"custom"}]}],"cpeConfigurations":[{"negate":false,"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*","versionEndIncluding":"9.20.24","versionStartIncluding":"9.20.0","vulnerable":true},{"criteria":"cpe:2.3:a:isc:bind:*:*:*:*:supported_preview:*:*:*","versionEndIncluding":"9.20.24","versionStartIncluding":"9.20.9","vulnerable":true},{"criteria":"cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*","versionEndIncluding":"9.21.23","versionStartIncluding":"9.21.0","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"OR"}],"cveId":"CVE-2026-11605","cwes":["CWE-408"],"description":"The issue is a resource exhaustion vulnerability associated with DNSSEC validation. BIND always validates all RRSIG records in an answer, even if they are not strictly needed. A query to an authoritative server/zone which returns many valid but superfluous RRSIG records causes the validator to waste disproportionate CPU time.\nThis issue affects BIND 9 versions 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, and 9.20.9-S1 through 9.20.24-S1.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":7.5,"severity":"high","source":"NVD: security-officer@isc.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}],"modifiedAt":1793641448623,"publishedAt":1784733411573,"references":[{"source":"security-officer@isc.org","tags":["Product"],"url":"https://downloads.isc.org/isc/bind9/9.20.26"},{"source":"security-officer@isc.org","tags":["Product"],"url":"https://downloads.isc.org/isc/bind9/9.21.24"},{"source":"security-officer@isc.org","tags":["Vendor Advisory"],"url":"https://kb.isc.org/docs/cve-2026-11605"}],"remediation":[],"revision":"5a2e56e2e6abd5d5f5d2083b9dc81ee3017283178af0f36b90026fa700e7a95c","sources":[{"modifiedAt":1793641448623,"name":"NVD","retrievedAt":1793643360501,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-11605"}],"ssvc":{"assessedAt":1784746427681,"automatable":"yes","exploitation":"none","source":"NVD SSVC: 134c704f-9b21-4f2e-91b3-4a467353bcc0","technicalImpact":"partial"},"status":"published","title":"CVE-2026-11605","updatedAt":1793643360501}