{"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-2026-13204","cwes":["CWE-617"],"description":"If a provably insecure domain is covered by both an NSEC and NSEC3 record at the parent, and there exist an RRSIG for only one of these types, then BIND may exit unexpectedly with an assertion while validating this proof.\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":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":1793641796387,"publishedAt":1784733412080,"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-2026-13204"}],"remediation":[],"revision":"8afb69b4c470f12b2f6f16d458832257d660c07968ad738ff934ffa6ab149f66","sources":[{"modifiedAt":1793641796387,"name":"NVD","retrievedAt":1793643361663,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-13204"}],"ssvc":{"assessedAt":1784746319528,"automatable":"yes","exploitation":"none","source":"NVD SSVC: 134c704f-9b21-4f2e-91b3-4a467353bcc0","technicalImpact":"partial"},"status":"published","title":"CVE-2026-13204","updatedAt":1793643361663}