CVE-2026-42913: Microsoft Remote Desktop Client

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

Concurrent execution using shared resource with improper synchronization ('race condition') in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

Affected products

• Microsoft Remote Desktop Client: before 1.2.7214 (fixed in 1.2.7214)
• Microsoft Windows 11 23h2: before 10.0.22631.7219 (fixed in 10.0.22631.7219)
• Microsoft Windows 11 24h2: before 10.0.26100.8655 (fixed in 10.0.26100.8655)
• Microsoft Windows 11 25h2: before 10.0.26200.8655 (fixed in 10.0.26200.8655)
• Microsoft Windows 11 26h1: before 10.0.28000.2269 (fixed in 10.0.28000.2269)
• Microsoft Windows Server 2022: before 10.0.20348.5256 (fixed in 10.0.20348.5256)
• Microsoft Windows Server 2025: before 10.0.26100.32995 (fixed in 10.0.26100.32995)

Published 2026-06-09. Last modified 2026-07-23.