{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-21T02:17:36.732","vulnerabilities":[{"cve":{"id":"CVE-2025-40777","sourceIdentifier":"security-officer@isc.org","published":"2025-07-16T18:15:24.770","lastModified":"2026-04-15T00:35:42.020","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"If a `named` caching resolver is configured with `serve-stale-enable` `yes`, and with `stale-answer-client-timeout` set to `0` (the only allowable value other than `disabled`), and if the resolver, in the process of resolving a query, encounters a CNAME chain involving a specific combination of cached or authoritative records, the daemon will abort with an assertion failure.\nThis issue affects BIND 9 versions 9.20.0 through 9.20.10, 9.21.0 through 9.21.9, and 9.20.9-S1 through 9.20.10-S1."},{"lang":"es","value":"Si un solucionador de caché con nombre está configurado con `serve-stale-enable` `yes` y con `stale-answer-client-timeout` establecido en `0` (el único valor permitido aparte de `disabled`), y si el solucionador, al resolver una consulta, encuentra una cadena CNAME que involucra una combinación específica de registros en caché o autorizados, el daemon se interrumpirá con un error de aserción. Este problema afecta a las versiones de BIND 9 de la 9.20.0 a la 9.20.10, de la 9.21.0 a la 9.21.9 y de la 9.20.9-S1 a la 9.20.10-S1."}],"metrics":{"cvssMetricV31":[{"source":"security-officer@isc.org","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}]},"weaknesses":[{"source":"security-officer@isc.org","type":"Secondary","description":[{"lang":"en","value":"CWE-617"}]}],"references":[{"url":"https://kb.isc.org/docs/cve-2025-40777","source":"security-officer@isc.org"},{"url":"http://www.openwall.com/lists/oss-security/2025/07/16/6","source":"af854a3a-2127-422b-91ae-364da2661108"}]}}]}