CVE-2026-80077: Microsoft Remote Desktop Client

High severity, CVSS 8.8. EPSS: 0.8% chance of exploitation in the next 30 days.

Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

Affected products

• Microsoft Remote Desktop Client: before 1.2.7279 (fixed in 1.2.7279)

Published 2026-09-08. Last modified 2026-09-22.