CVE-2022-3736

Name: CVE-2022-3736
Creator: NVD / NIST
Published: 2023-01-26T21:15:57.94+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 50.17%

Last modified Jun 17, 2026

CVE-2022-3736 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. BIND 9 resolver can crash when stale cache and stale answers are enabled, option `stale-answer-client-timeout` is set to a positive integer, and the resolver receives an RRSIG query. This issue affects BIND 9 versions 9.16.12 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.12-S1 through 9.16.36-S1.. EPSS estimates a 50.17% chance of exploitation in the next 30 days.

Description

BIND 9 resolver can crash when stale cache and stale answers are enabled, option `stale-answer-client-timeout` is set to a positive integer, and the resolver receives an RRSIG query. This issue affects BIND 9 versions 9.16.12 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.12-S1 through 9.16.36-S1.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

50.17%

98.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions	Update
Isc	Bind	>= 9.16.12, < 9.16.37	—
Isc	Bind	>= 9.18.0, < 9.18.11	—
Isc	Bind	>= 9.19.0, < 9.19.9	—
Isc	Bind	9.16.11	S1
Isc	Bind	9.16.13	S1
Isc	Bind	9.16.14	S1
Isc	Bind	9.16.21	S1
Isc	Bind	9.16.32	S1
Isc	Bind	9.16.36	S1

References

https://kb.isc.org/docs/cve-2022-3736Vendor Advisory
https://kb.isc.org/docs/cve-2022-3736Vendor Advisory

Timeline

Published: Jan 26, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-3736?

How severe is CVE-2022-3736?

CVE-2022-3736 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 50.17% probability of exploitation in the next 30 days.

How do I fix CVE-2022-3736?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-3736?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST