CVE-2025-48802

Windows SMB Server Spoofing Vulnerability

CVE-2025-48802 is fixed in 7 products on 1 platform, first by KB5062552, released July 8, 2025. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

6.5

Important

Exploitation

None reported

Exploitation Less Likely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0090

59th percentile

<p>Improper certificate validation in Windows SMB allows an authorized attacker to perform spoofing over a network.</p>

Where it's fixed

Product	Fixed in	Fix	Released
Microsoft
Windows 11 Version 22H2 for ARM64-based Systems		KB5062552	Jul 8, 2025
Windows 11 Version 22H2 for x64-based Systems		KB5062552	Jul 8, 2025
Windows 11 Version 23H2 for ARM64-based Systems		KB5062552	Jul 8, 2025
Windows 11 Version 23H2 for x64-based Systems		KB5062552	Jul 8, 2025
Windows Server 2022	20348.3932	KB5062572	Jul 8, 2025
Windows Server 2022 (Server Core installation)	20348.3932	KB5062572	Jul 8, 2025
Windows Server 2022, 23H2 Edition (Server Core installation)	25398.1732	KB5062570	Jul 8, 2025

Details

Published
July 8, 2025
Weakness
Improper Certificate Validation
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-48802

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