CVE-2025-40775

HighCVSS 7.5/10Last modified Jun 17, 2026

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. This issue affects BIND 9 versions 9.20.0 through 9.20.8 and 9.21.0 through 9.21.7.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-232

Affected software

No affected versions have been published.

Timeline

Published
May 21, 2025
Last modified
Jun 17, 2026
NVD status
Deferred

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CVE-2025-40775: High severity, CVSS 7.5 | Vulnix