Jun 2026: Windows Dynamic Host Configuration Protocol (DHCP) Tampering Vulnerability
CVE-2026-45602 Published on June 9, 2026

Windows Dynamic Host Configuration Protocol (DHCP) Tampering Vulnerability
No cwe for this issue in Windows DHCP Server allows an unauthorized attacker to perform tampering over a network.

Vendor Advisory NVD

Weakness Types

Acceptance of Extraneous Untrusted Data With Trusted Data

The software, when processing trusted data, accepts any untrusted data that is also included with the trusted data, treating the untrusted data as if it were trusted.

Improper Handling of Values

The software does not properly handle when the expected number of values for parameters, fields, or arguments is not provided in input, or if those values are undefined.

Products Associated with CVE-2026-45602

Want to know whenever a new CVE is published for Microsoft products? stack.watch will email you.

Microsoft Windows 10

Microsoft Windows Server 2019

Microsoft Windows Server 2022

Microsoft Windows Server 2025

Microsoft Windows 11 25h2

Microsoft Windows 11 23h2

Microsoft Windows 11 24h2

Microsoft Windows 11 26h1

Microsoft Windows Server 2016

Microsoft Windows Server 2012

Microsoft Windows Server 2012 R2

Affected Versions

Microsoft Windows 10 Version 1607:

Version 10.0.14393.0 and below 10.0.14393.9234 is affected.

Microsoft Windows 10 Version 1809:

Version 10.0.17763.0 and below 10.0.17763.8880 is affected.

Microsoft Windows 10 Version 21H2:

Version 10.0.19044.0 and below 10.0.19044.7417 is affected.

Microsoft Windows 10 Version 22H2:

Version 10.0.19045.0 and below 10.0.19045.7417 is affected.

Microsoft Windows 11 version 23H2:

Version 10.0.22631.0 and below 10.0.22631.7219 is affected.

Microsoft Windows 11 Version 23H2:

Version 10.0.22631.0 and below 10.0.22631.7219 is affected.

Microsoft Windows 11 Version 24H2:

Version 10.0.26100.0 and below 10.0.26100.8655 is affected.

Microsoft Windows 11 Version 25H2:

Version 10.0.26200.0 and below 10.0.26200.8655 is affected.

Microsoft Windows 11 version 26H1:

Version 10.0.28000.0 and below 10.0.28000.2269 is affected.

Microsoft Windows Server 2012:

Version 6.2.9200.0 and below 6.2.9200.26132 is affected.

Microsoft Windows Server 2012 (Server Core installation):

Version 6.2.9200.0 and below 6.2.9200.26132 is affected.

Microsoft Windows Server 2012 R2:

Version 6.3.9600.0 and below 6.3.9600.23228 is affected.

Microsoft Windows Server 2012 R2 (Server Core installation):

Version 6.3.9600.0 and below 6.3.9600.23228 is affected.

Microsoft Windows Server 2016:

Version 10.0.14393.0 and below 10.0.14393.9234 is affected.

Microsoft Windows Server 2016 (Server Core installation):

Version 10.0.14393.0 and below 10.0.14393.9234 is affected.

Microsoft Windows Server 2019:

Version 10.0.17763.0 and below 10.0.17763.8880 is affected.

Microsoft Windows Server 2019 (Server Core installation):

Version 10.0.17763.0 and below 10.0.17763.8880 is affected.

Microsoft Windows Server 2022:

Version 10.0.20348.0 and below 10.0.20348.5256 is affected.

Microsoft Windows Server 2025:

Version 10.0.26100.0 and below 10.0.26100.32995 is affected.

Microsoft Windows Server 2025 (Server Core installation):

Version 10.0.26100.0 and below 10.0.26100.32995 is affected.

Exploit Probability

EPSS

0.26%

Percentile

17.32%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.