What is CVE-2025-21313?

CVE-2025-21313 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Windows Security Account Manager (SAM) Denial of Service Vulnerability

Which CVE IDs does CVE-2025-21313 cover?

CVE-2025-21313 covers the following CVE IDs: CVE-2025-21313. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2025-21313?

CVE-2025-21313 has a CVSS v3 base score of 6.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2025-21313?

CVE-2025-21313 affects 5 products, including: Windows 11 Version 24H2 for ARM64-based Systems; Windows 11 Version 24H2 for x64-based Systems; Windows Server 2022, 23H2 Edition (Server Core installation); Windows Server 2025; Windows Server 2025 (Server Core installation).

CVE-2025-21313HighCVSS 6.5

Windows Security Account Manager (SAM) Denial of Service Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

January 14, 2025

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2025-21313 →

📋 Description

How could an attacker exploit the vulnerability? An authenticated attacker could make specially crafted API calls that lead to a Denial of Service.

🎯 Affected products5

Windows 11 Version 24H2 for ARM64-based Systems
Windows 11 Version 24H2 for x64-based Systems
Windows Server 2022, 23H2 Edition (Server Core installation)
Windows Server 2025
Windows Server 2025 (Server Core installation)

✅ Remediation

KB5050009 (Security Update) — fixed build 10.0.26100.2894 KB5049984 (Security Update) — fixed build 10.0.25398.1369

🔗 References (5)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21313
patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5050009
referencehttps://support.microsoft.com/help/5050009
patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5049984
referencehttps://support.microsoft.com/help/5049984