CVE-2026-54990: Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

PriorityP357critical9.8CVSS 3.1

AVNACLPRNUINSUCHIHAH

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

Affected

4 ranges

Vendor	Product	Version range	Fixed in
microsoft	windows_11_version_24h2	>= 10.0.26100.0 < 10.0.26100.8875	10.0.26100.8875
microsoft	windows_11_version_25h2	>= 10.0.26200.0 < 10.0.26200.8875	10.0.26200.8875
microsoft	windows_11_version_26h1	>= 10.0.28000.0 < 10.0.28000.2269	10.0.28000.2269
microsoft	windows_server_2025	>= 10.0.26100.0 < 10.0.26100.33158	10.0.26100.33158

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