Main Vulnerability Database Vulnerabilities #VU112598

Improper Certificate Validation in Microsoft Windows and Windows Server - CVE-2025-48802

Published: July 9, 2025

Vulnerability identifier: #VU112598

CSH Severity: Medium

CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-48802

CWE-ID: CWE-295

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to improper certificate validation in Windows SMB Server. A remote user can perform a spoofing attack on the system.

Affected software

Microsoft Windows
Windows Server

How to mitigate CVE-2025-48802

Install updates from vendor's website.

Microsoft Windows - addressed in versions 10 1607 10.0.14393.8246, 11 22H2 10.0.22621.5624, 11 23H2 10.0.22631.5624
Windows Server - addressed in versions 2022 23H2 10.0.22621.5472, 2022 23H2 10.0.25398.1732, 2022 10.0.20348.3932

External References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-48802

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