CVE-2025-40780 Affecting bind9.18-debugsource package, versions <32:9.18.29-5.el9_7.2


Severity

Recommended
0.0
high
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.47% (40th percentile)

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  • Snyk IDSNYK-ROCKY9-BIND918DEBUGSOURCE-14125398
  • published27 Nov 2025
  • disclosed22 Oct 2025

Introduced: 22 Oct 2025

CVE-2025-40780  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:9 bind9.18-debugsource to version 32:9.18.29-5.el9_7.2 or higher.
This issue was patched in RLSA-2025:21111.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bind9.18-debugsource package and not the bind9.18-debugsource package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:9 relevant fixed versions and status.

In specific circumstances, due to a weakness in the Pseudo Random Number Generator (PRNG) that is used, it is possible for an attacker to predict the source port and query ID that BIND will use. This issue affects BIND 9 versions 9.16.0 through 9.16.50, 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.16.8-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1.

CVSS Base Scores

version 3.1