CVE-2025-40775 (GCVE-0-2025-40775)
Vulnerability from cvelistv5
Published
2025-05-21 12:35
Modified
2025-05-23 13:11
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-232 - Improper Handling of Undefined Values
Summary
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. This issue affects BIND 9 versions 9.20.0 through 9.20.8 and 9.21.0 through 9.21.7.
References
Impacted products
Vendor Product Version
ISC BIND 9 Version: 9.20.0   <
Version: 9.21.0   <
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