CVE-2026-71331: Microsoft Windows 10 1809

High severity, CVSS 8.1. EPSS: 0.7% chance of exploitation in the next 30 days.

Integer overflow or wraparound in Windows Device Health Attestation (DHA) allows an unauthorized attacker to execute code over a network.

Affected products

• Microsoft Windows 10 1809: before 10.0.17763.9121 (fixed in 10.0.17763.9121)
• Microsoft Windows Server 2019: before 10.0.17763.9121 (fixed in 10.0.17763.9121)
• Microsoft Windows Server 2022: before 10.0.20348.5440 (fixed in 10.0.20348.5440)
• Microsoft Windows Server 2025: before 10.0.26100.33296 (fixed in 10.0.26100.33296)

Published 2026-08-11. Last modified 2026-08-20.