CVE-2025-48802: Microsoft Windows 11 22h2

Medium severity, CVSS 6.5. EPSS: 0.9% chance of exploitation in the next 30 days.

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

Affected products

• Microsoft Windows 11 22h2: before 10.0.22621.5624 (fixed in 10.0.22621.5624)
• Microsoft Windows 11 23h2: before 10.0.22631.5624 (fixed in 10.0.22631.5624)
• Microsoft Windows Server 2022: before 10.0.20348.3932 (fixed in 10.0.20348.3932)
• Microsoft Windows Server 2022 23h2: before 10.0.25398.1732 (fixed in 10.0.25398.1732)

Published 2025-07-08. Last modified 2026-06-17.