{"affected":[{"conditional":false,"product":"bind","source":"NVD","vendor":"isc","versions":[{"greaterThanOrEqual":"9.11.0","lessThanOrEqual":"9.18.50","status":"affected","version":"*","versionType":"custom"}]},{"conditional":false,"product":"bind","source":"NVD","vendor":"isc","versions":[{"greaterThanOrEqual":"9.11.3","lessThanOrEqual":"9.18.50","status":"affected","version":"*","versionType":"custom"}]},{"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":"9.18.50","versionStartIncluding":"9.11.0","vulnerable":true},{"criteria":"cpe:2.3:a:isc:bind:*:*:*:*:supported_preview:*:*:*","versionEndIncluding":"9.18.50","versionStartIncluding":"9.11.3","vulnerable":true},{"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-2026-13321","cwes":["CWE-346"],"description":"The BIND resolver accepts validly-signed NSEC records where the \"Next Domain Name\" field points outside the signer's zone.\nThis issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":8.6,"severity":"high","source":"NVD: security-officer@isc.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N","version":"3.1"}],"modifiedAt":1793641887447,"publishedAt":1784733412200,"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-2026-13321"}],"remediation":[],"revision":"2a42f78fc1b3591d67ad5ffc2d7430f992478b0c1649cce6de4755ee3d030cc0","sources":[{"modifiedAt":1793641887447,"name":"NVD","retrievedAt":1793643362192,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-13321"}],"ssvc":{"assessedAt":1784746292344,"automatable":"yes","exploitation":"none","source":"NVD SSVC: 134c704f-9b21-4f2e-91b3-4a467353bcc0","technicalImpact":"partial"},"status":"published","title":"CVE-2026-13321","updatedAt":1793643362192}