{"id":"CVE-2025-40775","url":"https://www.cyber-defence.io/tools/cve/CVE-2025-40775","generatedAt":"2026-11-03T20:37:59.503Z","title":"When an incoming DNS protocol message includes a Transaction Signature (TSIG), BIND always checks it.","description":"When an incoming DNS protocol message includes a Transaction Signature (TSIG), BIND always checks it.  If the TSIG contains an invalid value in the algorithm field, BIND immediately aborts with an assertion failure.\nThis issue affects BIND 9 versions 9.20.0 through 9.20.8 and 9.21.0 through 9.21.7.","published":"2025-05-21T13:16:03.000Z","lastModified":"2026-06-17T09:22:07.000Z","status":"Deferred","sourceIdentifier":"security-officer@isc.org","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-232"],"affected":[],"epss":{"score":0.15312,"percentile":0.96773,"date":"2026-11-02","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 15.3%, higher than 97% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"https://kb.isc.org/docs/cve-2025-40775","source":"security-officer@isc.org"},{"url":"http://www.openwall.com/lists/oss-security/2025/05/21/1","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20250523-0001/","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-40775","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}