CVE-2023-35643: DHCP Server Service Information Disclosure Vulnerability

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-12-12 · updated 2026-06-17
Weakness: CWE-126

Description

DHCP Server Service Information Disclosure Vulnerability

Affected products

Microsoft Windows Server 2012: r2
Microsoft Windows Server 2016: all versions
Microsoft Windows Server 2019: all versions
Microsoft Windows Server 2022: all versions
Microsoft Windows Server 2012: from 6.2.9200.0 before 6.2.9200.24614 — fixed in 6.2.9200.24614
Microsoft Windows Server 2012 R2: from 6.3.9600.0 before 6.3.9600.21715 — fixed in 6.3.9600.21715
Microsoft Windows Server 2016: from 10.0.14393.0 before 10.0.14393.6529 — fixed in 10.0.14393.6529
Microsoft Windows Server 2019: from 10.0.17763.0 before 10.0.17763.5206 — fixed in 10.0.17763.5206
Microsoft Windows Server 2022: from 10.0.20348.0 before 10.0.20348.2159 — fixed in 10.0.20348.2159
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation): from 10.0.25398.0 before 10.0.25398.584 — fixed in 10.0.25398.584

How to fix

Upgrade to a fixed version: Microsoft Windows Server 2012 6.2.9200.24614; Microsoft Windows Server 2012 R2 6.3.9600.21715; Microsoft Windows Server 2016 10.0.14393.6529; Microsoft Windows Server 2019 10.0.17763.5206; Microsoft Windows Server 2022 10.0.20348.2159; Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.584. Check the vendor advisory for mitigations.

References

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