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Microsoft Security Response CenterCVE-2026-45648

Windows Active Directory Domain Services Remote Code Execution Vulnerability

CriticalVendor CVSS 8.8 / 10 1 CVE Published Jun 9, 2026 at 7:00 AM UTC

Summary

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

Products covered

  • Windows Server 2022

  • Windows Server 2022 (Server Core installation)

  • Windows Server 2025 (Server Core installation)

  • Windows Server 2025

Remediation

Install KB5094128. Install KB5094125.

Vendor-listed fixes

  • 10.0.20348.5256

  • 10.0.26100.32995

CVEs in this advisory 1

Updates

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.