CVE-2023-35638 — DHCP Server Service 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 Dec 12 2023

Last Updated Dec 12 2023

Publicly Disclosed No

CISA KEV Not Listed

Known Exploits None Known

EPSS Score 0.03262 — 0.86765 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

0.03262

probability of exploitation in the next 30 days

0.86765 percentile - updated 2026-06-21

View on FIRST.org

Affected Products

9 affected products

Product	KB Article	Severity	Impact	Restart Required
Windows Server 2012	`5033429 (Monthly Rollup)`	Important	Denial of Service	Yes
Windows Server 2012 (Server Core installation)	`5033429 (Monthly Rollup)`	Important	Denial of Service	Yes
Windows Server 2012 R2	`5033420 (Monthly Rollup)`	Important	Denial of Service	Yes
Windows Server 2012 R2 (Server Core installation)	`5033420 (Monthly Rollup)`	Important	Denial of Service	Yes
Windows Server 2016	`5033373 (Security Update)`	Important	Denial of Service	Yes
Windows Server 2016 (Server Core installation)	`5033373 (Security Update)`	Important	Denial of Service	Yes
Windows Server 2019	`5033371 (Security Update)`	Important	Denial of Service	Yes
Windows Server 2019 (Server Core installation)	`5033371 (Security Update)`	Important	Denial of Service	Yes
Windows Server 2022 5033118 (Security Update) 5033464 (Security Hotpatch Update) Important Denial of Service 5032198 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 10.0.20348.2159 10.0.20348.2144 Yes None Windows Server 2022 (Server Core installation) 5033118 (Security Update) 5033464 (Security Hotpatch Update) Important Denial of Service 5032198 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 10.0.20348.2159 10.0.20348.2144 Yes None Windows Server 2022, 23H2 Edition (Server Core installation)	`5033383 (Security Update)`	Important	Denial of Service	Yes

Patches

5 patches

Article	Type	Restart
`5033429`	Monthly Rollup	Yes
`5033420`	Monthly Rollup	Yes
`5033373`	Security Update	Yes
`5033371`	Security Update	Yes
`5033383`	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

YanZiShuang@BigCJTeam of cyberkl

References

MSRC Advisory MITRE NVD