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CVE-2022-3736

43
FAUCET Score

CVE-2022-3736 describes a denial-of-service vulnerability in BIND 9, affecting 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. The vulnerability allows a remote attacker to crash the BIND 9 resolver when specific configurations (stale cache, stale answers, and a positive stale-answer-client-timeout) are enabled and an RRSIG query is received. With a CVSS score of 7.5 (High), this flaw presents a significant availability risk due to its low attack complexity and network-based vector. While there is no evidence of active exploitation, public exploit code, or Metasploit/Nuclei modules, the vulnerability has garnered some community discussion and media coverage, indicating awareness within the cybersecurity community.

Impacted Technologies

VendorProductVersion(s)CPE
>= 9.16.12, < 9.16.37CPE matchmatch criteria
cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*
>= 9.18.0, < 9.18.11CPE matchmatch criteria
cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*
>= 9.19.0, < 9.19.9CPE matchmatch criteria
cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*
9.16.11CPE matchmatch criteria
cpe:2.3:a:isc:bind:9.16.11:s1:*:*:supported_preview:*:*:*
9.16.13CPE matchmatch criteria
cpe:2.3:a:isc:bind:9.16.13:s1:*:*:supported_preview:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
48.71%
Probability of exploitation in next 30 days
EPSS Percentile
98.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.4871 is in the 98th percentile among its peer group of 51,485 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

microsoftpatch availablevia msrc
Product: 18457-16823Fixed in: 9.16.37-2
microsoftpatch availablevia msrc
Product: 18456-16820Fixed in: 9.16.37-1
microsoftpatch availablevia msrc
Product: cbl2 bind 9.16.37-2 on CBL Mariner 2.0Fixed in: 9.16.37-2
microsoftpatch availablevia msrc
Product: cm1 bind 9.16.37-1 on CBL Mariner 1.0Fixed in: 9.16.37-1
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: bind-32:9.16.23-11.el9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: bind9.16-32:9.16.23-0.14.el8
View patch
alistgovendor investigatingvia llm_extracted
View patch

Vendor Advisories (3)

redhatCVE-2022-3736Moderate

bind: sending specific queries to the resolver may cause a DoS

Jan 25, 2023
microsoft2023-Jan/CVE-2022-3736Important

named configured to answer from stale cache may terminate unexpectedly while processing RRSIG queries

Jan 10, 2023
alistgollm-alistgo-b2af2bf4d3896806

named configured to answer from stale cache may terminate unexpectedly while processing RRSIG queries

References

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