CVE-2025-59280: Microsoft Windows 10 1507

Low severity, CVSS 3.1. EPSS: 0.5% chance of exploitation in the next 30 days.

Improper authentication in Windows SMB Client allows an unauthorized attacker to perform tampering over a network.

Affected products

• Microsoft Windows 10 1507: before 10.0.10240.21161 (fixed in 10.0.10240.21161)
• Microsoft Windows 10 1607: before 10.0.14393.8519 (fixed in 10.0.14393.8519)
• Microsoft Windows 10 1809: before 10.0.17763.7919 (fixed in 10.0.17763.7919)
• Microsoft Windows 10 21h2: before 10.0.19044.6456 (fixed in 10.0.19044.6456)
• Microsoft Windows 10 22h2: before 10.0.19045.6456 (fixed in 10.0.19045.6456)
• Microsoft Windows 11 22h2: before 10.0.22621.6060 (fixed in 10.0.22621.6060)
• Microsoft Windows 11 23h2: up to and including 10.0.22631.6060
• Microsoft Windows 11 24h2: before 10.0.26100.6899 (fixed in 10.0.26100.6899)
• Microsoft Windows Server 2008: affected versions not specified; version r2 only
• Microsoft Windows Server 2012: affected versions not specified; version r2 only
• Microsoft Windows Server 2016: up to and including 10.0.14393.8519
• Microsoft Windows Server 2019: before 10.0.17763.7919 (fixed in 10.0.17763.7919)
• Microsoft Windows Server 2022: before 10.0.20348.4294 (fixed in 10.0.20348.4294)
• Microsoft Windows Server 2022 23h2: before 10.0.25398.1913 (fixed in 10.0.25398.1913)
• Microsoft Windows Server 2025: up to and including 10.0.26100.6899

Published 2025-10-14. Last modified 2026-06-17.