CVE-2022-34724 — Windows DNS Server Denial of Service Vulnerability

Executive Summary

None

Overview

7.5

CVSS HIGH

Important

MS Severity

Not Exploited

MS Exploit Status

Less Likely

MS Exploit Likelihood

Category Denial of Service

Released Sep 13 2022

Last Updated Sep 13 2022

Publicly Disclosed No

CISA KEV Not Listed

Known Exploits None Known

EPSS Score 0.03069 — 0.85928 percentile

NVD CVSS 7.5 HIGH — matches MSRC

CVSS Vector

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

ATTACK VECTOR

Network

ATTACK COMPLEXITY

Low

PRIVILEGES REQUIRED

None

USER INTERACTION

None

SCOPE

Unchanged

CONFIDENTIALITY

None

INTEGRITY

None

AVAILABILITY

High

EXPLOIT CODE MATURITY

Unproven

REMEDIATION LEVEL

Official Fix

REPORT CONFIDENCE

Confirmed

Temporal Score: 6.5

EPSS Score

0.03069

probability of exploitation in the next 30 days

0.85928 percentile - updated 2026-06-21

View on FIRST.org

Affected Products

4 affected products

Product	KB Article	Severity	Impact	Restart Required
Windows Server 2008 for 32-bit Systems Service Pack 2 5017358 (Monthly Rollup) 5017371 (Security Only) Important Denial of Service 5016669 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 6.0.6003.21666 Yes 5017358 5017371 Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 5017358 (Monthly Rollup) 5017371 (Security Only) Important Denial of Service 5016669 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 6.0.6003.21666 Yes 5017358 5017371 Windows Server 2008 for x64-based Systems Service Pack 2 5017358 (Monthly Rollup) 5017371 (Security Only) Important Denial of Service 5016669 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 6.0.6003.21666 Yes 5017358 5017371 Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 5017358 (Monthly Rollup) 5017371 (Security Only) Important Denial of Service 5016669 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 6.0.6003.21666 Yes 5017358 5017371 Windows Server 2008 R2 for x64-based Systems Service Pack 1 5017361 (Monthly Rollup) 5017373 (Security Only) Important Denial of Service 5016676 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 6.1.7601.26115 Yes 5017361 5017373 Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 5017361 (Monthly Rollup) 5017373 (Security Only) Important Denial of Service 5016676 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 6.1.7601.26115 Yes 5017361 5017373 Windows Server 2012 5017370 (Monthly Rollup) 5017377 (Security Only) Important Denial of Service 5016672 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 6.2.9200.23865 Yes 5017370 5017377 Windows Server 2012 (Server Core installation) 5017370 (Monthly Rollup) 5017377 (Security Only) Important Denial of Service 5016672 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 6.2.9200.23865 Yes 5017370 5017377 Windows Server 2012 R2 5017367 (Monthly Rollup) 5017365 (Security Only) Important Denial of Service 5016681 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 6.3.9600.20571 Yes 5017367 5017365 Windows Server 2012 R2 (Server Core installation) 5017367 (Monthly Rollup) 5017365 (Security Only) Important Denial of Service 5016681 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 6.3.9600.20571 Yes 5017367 5017365 Windows Server 2016	`5017305 (Security Update)`	Important	Denial of Service	Yes
Windows Server 2016 (Server Core installation)	`5017305 (Security Update)`	Important	Denial of Service	Yes
Windows Server 2019	`5017315 (Security Update)`	Important	Denial of Service	Yes
Windows Server 2019 (Server Core installation)	`5017315 (Security Update)`	Important	Denial of Service	Yes

Patches

2 patches

Article	Type	Restart
`5017305`	Security Update	Yes
`5017315`	Security Update	Yes

Known Exploits

No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.

Acknowledgments

None

References

MSRC Advisory MITRE NVD