Microsoft Security Response CenterCVE-2026-45648

Windows Active Directory Domain Services Remote Code Execution Vulnerability

Stack-based buffer overflow in Active Directory Domain Services allows an authorized attacker to execute code over a network.

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8.8CVSS out of 10Critical severity

Scope

What the vendor says is affected

Windows Server 2022
Windows Server 2022 (Server Core installation)
Windows Server 2025 (Server Core installation)
Windows Server 2025

Versions the vendor lists as fixed

10.0.20348.5256
10.0.26100.32995

Next step

What the vendor recommends

Install KB5094128. Install KB5094125.

Review the complete instructions on the vendor's site

Timeline

When this advisory changed

Jun 9, 2026 at 7:00 AM UTC
Published by Microsoft Security Response Center
The publication date reported by the vendor.
Sep 28, 2026 at 11:20 AM UTC
Added to SecurityAlert
We collected the advisory from the official source.

Vulnerabilities

CVEs named in this advisory

CVE-2026-45648View CVSS, KEV, EPSS, and threat context

Source

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Vendor: Microsoft Security Response Center
Advisory ID: CVE-2026-45648
Last source check: Sep 28, 2026 at 11:20 AM UTC

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What the vendor says is affected

Versions the vendor lists as fixed

What the vendor recommends

When this advisory changed

CVEs named in this advisory

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