Medium5.5Vendor: HighMicrosoft Server Updated

Medium [CVE-2026-69672] Windows DNS Information Disclosure Vulnerability

This medium-severity Microsoft Server advisory covers CVE-2026-69672 affecting Windows Server 2019, Windows Server 2022, Windows Server 2025.

CVE-2026-69672 Published Sep 8, 2026Updated by vendor Sep 8, 2026

CVE-2026-69672

Affected products & platforms

Microsoft ServerWindows Server

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Summary

Windows DNS Information Disclosure Vulnerability

Affected products named by the advisory: Windows Server 2019; Windows Server 2022; Windows Server 2025; Windows Server 2016; and 2 more.

Affected products named by the advisory: Windows Server 2012 R2.

Affected versions

Windows 10 Version 1607 10.0.14393.0 before 10.0.14393.9512
Windows 10 Version 1809 10.0.17763.0 before 10.0.17763.9245
Windows Server 2012 6.2.9200.0 before 6.2.9200.26349
Windows Server 2012 (Server Core installation) 6.2.9200.0 before 6.2.9200.26349
Windows Server 2012 R2 6.3.9600.0 before 6.3.9600.23397
Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 before 6.3.9600.23397
Windows Server 2016 10.0.14393.0 before 10.0.14393.9512
Windows Server 2016 (Server Core installation) 10.0.14393.0 before 10.0.14393.9512
Windows Server 2019 10.0.17763.0 before 10.0.17763.9245
Windows Server 2019 (Server Core installation) 10.0.17763.0 before 10.0.17763.9245
Windows Server 2022 10.0.20348.0 before 10.0.20348.5622
Windows Server 2025 10.0.26100.0 before 10.0.26100.33438

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Fixed versions

KB5122876 (build 10.0.17763.9245)
KB5122882 (build 10.0.20348.5622)
KB5122871 (build 10.0.26100.33438)
KB5123099 (build 10.0.14393.9512)
KB5123065 (build 6.2.9200.26349)
KB5123066 (build 6.3.9600.23397)

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Install the applicable security update for your platform: KB5122876, KB5122882, KB5122871, KB5123099, KB5123065, KB5123066 (see the Microsoft Update Catalog).

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

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