CVE-2025-48802

Windows SMB Server Spoofing Vulnerability

State: Published
Severity: 6.5 Medium
Published: Jul 8, 2025
Updated: Feb 13, 2026
Reserved: May 26, 2025

Description

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

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-295 Improper Certificate Validation

Affected Products

Product	Versions
Windows 11 version 22H2Microsoft	10.0.22621.0 to before 10.0.22621.5624Affected
Windows 11 version 22H3Microsoft	10.0.22631.0 to before 10.0.22631.5624Affected
Windows 11 Version 23H2Microsoft	10.0.22631.0 to before 10.0.22631.5624Affected
Windows Server 2022Microsoft	10.0.20348.0 to before 10.0.20348.3932Affected
Windows Server 2022, 23H2 Edition (Server Core installation)Microsoft	10.0.25398.0 to before 10.0.25398.1732Affected

References

Windows SMB Server Spoofing Vulnerabilityvendor-advisorypatch

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