CVE-2025-40775

Published: May 21, 2025Modified: Jun 17, 2026Deferred

7.5

Vector

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

Exploitability: 3.9 / Impact: 3.6

Source: security-officer@isc.org (Secondary)

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.

Related CWEs

CWE-232

Improper Handling of Undefined Values

The product does not handle or incorrectly handles when a value is not defined or supported for the associated parameter, field, or argument name.

References (3)

https://kb.isc.org/docs/cve-2025-40775

Source: security-officer@isc.org

http://www.openwall.com/lists/oss-security/2025/05/21/1

Source: af854a3a-2127-422b-91ae-364da2661108

https://security.netapp.com/advisory/ntap-20250523-0001/

Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.