High MSRC-CVE-2025-48802 1 CVE

Windows SMB Server Spoofing Vulnerability

Published Jul 8, 2025 · Updated Jul 8, 2025

Vendor: Microsoft

Summary

Impact: Spoofing. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.

Details

Security updates
10.0.20348.3932 — https://support.microsoft.com/help/5062572
10.0.22621.5624 — https://support.microsoft.com/help/5062552
10.0.25398.1732 — https://support.microsoft.com/help/5062570

Vulnerabilities 1

Medium 6.5

CVE-2025-48802

Windows SMB Server Spoofing Vulnerability

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

Microsoft Windows Server 2022 Windows 11 version 23H2 Windows 11 version 22H2 Windows

Jul 8, 2025

Revision history

2025-07-08 #1
Information published.

References

CVE-2025-48802 Windows SMB Server Spoofing Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-48802
Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
Common Vulnerability Scoring System
https://www.first.org/cvss