No exploitation reportedFix available

CVE-2022-3736

Q: Is CVE-2022-3736 actively exploited?

Active exploitation of CVE-2022-3736 has not been confirmed. Its EPSS score was 48.7% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2022-3736?

CVE-2022-3736 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

No exploitation reported by the sources we read.

Published2023-01-26
Fixed in9.19.9 · 9.18.11 · 9.16.37
WeaknessCWE-20

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC

2023-01-2621:15CVE publishedNVD
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2022-3736?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-3736?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Isc bind

Branch	Affected	Fixed in	Source
9.19	≥ 9.19.0, < 9.19.9	9.19.9	NVD
9.18	≥ 9.18.0, < 9.18.11	9.18.11	NVD
9.16	≥ 9.16.12, < 9.16.37	9.16.37	NVD
9.16	= 9.16.11	no fix published	NVD
9.16	= 9.16.13	no fix published	NVD
9.16	= 9.16.14	no fix published	NVD
9.16	= 9.16.21	no fix published	NVD
9.16	= 9.16.32	no fix published	NVD
9.16	= 9.16.36	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Isc bind to 9.19.9 · 9.18.11 · 9.16.37

Advisories and patches

kb.isc.orgVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2025-04-01
OpenCVESSVC decisionnone—
CNACVSS 3.17.5read 2026-10-23
NVDCVSS 3.17.5read 2026-10-23
CISA-ADPweakness (CWE)CWE-202025-04-01
FIRST EPSSEPSS score48.7 %read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2023-01-26
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2022-3736?

Is CVE-2022-3736 actively exploited?

Active exploitation of CVE-2022-3736 has not been confirmed. Its EPSS score was 48.7% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-3736?

CVE-2022-3736 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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