CVE-2025-48802: Windows SMB Server Spoofing Vulnerability

Overview

Severity

Medium (CVSS 6.5)

CVSS Vector

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

Category

Spoofing

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2025-Jul

Released

2025-07-08

EPSS Score

0.25% (percentile: 48.1%)

Description

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

Affected Products (7)

Windows

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

ESU

• Windows 11 Version 22H2 for ARM64-based Systems
• Windows 11 Version 22H2 for x64-based Systems

Security Updates (3)

• 5062572
• 5062552
• 5062570

Acknowledgments

Anonymous

Revision History

• 2025-07-08: Information published.