CVE-2025-27483: Microsoft Windows 10 1507

High severity, CVSS 7.8. EPSS: 0.8% chance of exploitation in the next 30 days.

Out-of-bounds read in Windows NTFS allows an unauthorized attacker to elevate privileges locally.

Affected products

• Microsoft Windows 10 1507: before 10.0.10240.20978 (fixed in 10.0.10240.20978)
• Microsoft Windows 10 1607: before 10.0.14393.7969 (fixed in 10.0.14393.7969)
• Microsoft Windows 10 1809: before 10.0.17763.7136 (fixed in 10.0.17763.7136)
• Microsoft Windows Server 2012: version r2 only
• Microsoft Windows Server 2016: before 10.0.14393.7969 (fixed in 10.0.14393.7969)
• Microsoft Windows Server 2019: before 10.0.17763.7136 (fixed in 10.0.17763.7136)

Published 2025-04-08. Last modified 2026-06-17.