CVE-2025-40780

HIGH

8.6

CVSS v3

Description

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.

CWE-341

How to fix

Remediation Available

bind9Debian

Fixed in:1:9.16.50-1~deb11u4CVE-2025-40780

Fixed in:1:9.18.41-1~deb12u1CVE-2025-40780

Fixed in:1:9.20.15-1~deb13u1CVE-2025-40780

Fixed in:1:9.20.15-1CVE-2025-40780

bindRed Hat / RHEL

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

bindRocky

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

bind-chrootRocky

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

bind-chrootRed Hat / RHEL

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

bind-debuginfoRocky

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

bind-debuginfoRed Hat / RHEL

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

bind-debugsourceRed Hat / RHEL

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

bind-debugsourceRocky

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

bind-develRed Hat / RHEL

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

bind-develRocky

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

bind-dnssec-docRed Hat / RHEL

Fixed in:32:9.16.23-1.el9_0.11RHSA-2025:21889

Fixed in:32:9.16.23-11.el9_2.9RHSA-2025:21887

Fixed in:32:9.16.23-18.el9_4.10RHSA-2025:21817

Fixed in:32:9.16.23-31.el9_6.2RHSA-2025:19951

Fixed in:32:9.16.23-34.el9_7.1RHSA-2025:21110

bind-dnssec-docRocky

Fixed in:32:9.16.23-1.el9_0.11RHSA-2025:21889

Fixed in:32:9.16.23-31.el9_6.2RHSA-2025:19951

Fixed in:32:9.16.23-34.el9_7.1RHSA-2025:21110

Fixed in:32:9.16.23-11.el9_2.9RHSA-2025:21887

Fixed in:32:9.16.23-18.el9_4.10RHSA-2025:21817

bind-dnssec-utilsRed Hat / RHEL

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

bind-dnssec-utilsRocky

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

bind-dnssec-utils-debuginfoRocky

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

bind-dnssec-utils-debuginfoRed Hat / RHEL

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

bind-docRed Hat / RHEL

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.16.23-34.el9_7.1RHSA-2025:21110

Fixed in:32:9.16.23-18.el9_4.10RHSA-2025:21817

Fixed in:32:9.16.23-31.el9_6.2RHSA-2025:19951

bind-docRocky

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.16.23-31.el9_6.2RHSA-2025:19951

Fixed in:32:9.16.23-34.el9_7.1RHSA-2025:21110

Fixed in:32:9.16.23-18.el9_4.10RHSA-2025:21817

bind-libsRed Hat / RHEL

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

bind-libsRocky

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

bind-libs-debuginfoRocky

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

bind-libs-debuginfoRed Hat / RHEL

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

bind-licenseRed Hat / RHEL

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.16.23-11.el9_2.9RHSA-2025:21887

Fixed in:32:9.16.23-1.el9_0.11RHSA-2025:21889

Fixed in:32:9.16.23-34.el9_7.1RHSA-2025:21110

Fixed in:32:9.16.23-31.el9_6.2RHSA-2025:19951

Fixed in:32:9.16.23-18.el9_4.10RHSA-2025:21817

bind-licenseRocky

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.16.23-1.el9_0.11RHSA-2025:21889

Fixed in:32:9.16.23-18.el9_4.10RHSA-2025:21817

Fixed in:32:9.16.23-34.el9_7.1RHSA-2025:21110

Fixed in:32:9.16.23-31.el9_6.2RHSA-2025:19951

Fixed in:32:9.16.23-11.el9_2.9RHSA-2025:21887

bind-utilsRocky

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

bind-utilsRed Hat / RHEL

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

bind-utils-debuginfoRed Hat / RHEL

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

bind-utils-debuginfoRocky

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

Fixed in:32:9.18.33-4.el10_0.2RHSA-2025:19912

Fixed in:32:9.18.33-10.el10_1.2RHSA-2025:21034

bind9.16Red Hat / RHEL

Fixed in:32:9.16.23-0.22.el8_10.4RHSA-2025:19793

Fixed in:32:9.16.23-0.7.el8_6.9RHSA-2025:22168

Fixed in:32:9.16.23-0.14.el8_8.7RHSA-2025:21939

Fixed in:32:9.16.23-0.22.el8_10.4RHSA-2025:19793

This vulnerability affects an unusually large number of packages. The highest-confidence fixes are shown above; the full list is longer. Check the referenced advisories for complete coverage.

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeChanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

0.46%probability of exploitation in 30 days

38thpercentile

Low risk: more likely to be exploited than 38% of all known CVEs.

References

Other references2

Related Vulnerabilities

Other CWE-341 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-6563	Critical	9.8	1.7%	-	-
CVE-2020-1731	Critical	9.1	1.3%	-	Fix
CVE-2018-17917	Medium	5.3	1.3%	-	-
CVE-2020-5365	Medium	5.3	1.0%	-	-
CVE-2024-10141	Low	3.7	0.8%	-	-
CVE-2026-38968	Critical	9.8	0.6%	-	-

Common questions

How do I fix CVE-2025-40780?

Published advisories record a fix for 94 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2025-40780 being actively exploited?

Not that we know of. CVE-2025-40780 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.46% is the estimated probability that it will be exploited in the next 30 days. That is higher than 38% of all scored CVEs.

How severe is CVE-2025-40780?

CVE-2025-40780 has a CVSS v3 base score of 8.6, rated important. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2025-40780 affect?

Published advisories record a fix for bind9 (Debian), bind (Red Hat / RHEL), bind (Rocky), bind-chroot (Rocky), and 90 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2025-40780

Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-04.