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CVE-2023-35622: Windows DNS Spoofing Vulnerability

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% 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-290

Description

Windows DNS Spoofing Vulnerability

Affected products

• Microsoft Windows Server 2008: r2-sp1
• 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 2022, 23H2 Edition (Server Core installation): before 10.0.25398.584 — fixed in 10.0.25398.584
• Microsoft Windows Server 2008 R2 Service Pack 1: from 6.1.7601.0 before 6.1.7601.26864 — fixed in 6.1.7601.26864
• Microsoft Windows Server 2008 Service Pack 2: from 6.0.6003.0 before 6.0.6003.22413 — fixed in 6.0.6003.22413
• 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 2022, 23H2 Edition (Server Core installation) 10.0.25398.584; Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.26864; Microsoft Windows Server 2008 Service Pack 2 6.0.6003.22413; 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

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35622
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35622

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