CVE-2023-28254: Windows DNS Server Remote Code Execution Vulnerability

Severity: high (CVSS 7.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-04-11 · updated 2026-06-17
Weakness: CWE-122

Description

Windows DNS Server Remote Code Execution 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 2008 R2 Service Pack 1: from 6.1.7601.0 before 6.1.7601.26466 — fixed in 6.1.7601.26466
Microsoft Windows Server 2008 Service Pack 2: from 6.0.6003.0 before 6.0.6003.22015 — fixed in 6.0.6003.22015
Microsoft Windows Server 2012: from 6.2.9200.0 before 6.2.9200.24216 — fixed in 6.2.9200.24216
Microsoft Windows Server 2012 R2: from 6.3.9600.0 before 6.3.9600.20919 — fixed in 6.3.9600.20919
Microsoft Windows Server 2016: from 10.0.14393.0 before 10.0.14393.5850 — fixed in 10.0.14393.5850
Microsoft Windows Server 2019: from 10.0.17763.0 before 10.0.17763.4252 — fixed in 10.0.17763.4252
Microsoft Windows Server 2022: from 10.0.20348.0 before 10.0.20348.1668 — fixed in 10.0.20348.1668

How to fix

Upgrade to a fixed version: Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.26466; Microsoft Windows Server 2008 Service Pack 2 6.0.6003.22015; Microsoft Windows Server 2012 6.2.9200.24216; Microsoft Windows Server 2012 R2 6.3.9600.20919; Microsoft Windows Server 2016 10.0.14393.5850; Microsoft Windows Server 2019 10.0.17763.4252; Microsoft Windows Server 2022 10.0.20348.1668. Check the vendor advisory for mitigations.

References

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