CVE-2025-40775 Affecting bind9 package, versions *


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.02% (3rd percentile)

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  • Snyk IDSNYK-DEBIAN11-BIND9-10222884
  • published21 Jun 2025
  • disclosed21 May 2025

Introduced: 21 May 2025

CVE-2025-40775  (opens in a new tab)

How to fix?

There is no fixed version for Debian:11 bind9.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bind9 package and not the bind9 package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1