CyberICT

CVE-2026-54990

Microsoft · Published July 14, 2026

CVSS v3.1

CRITICAL
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Description

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

Affected Products

  • Windows Server 2025 (Server Core installation)
  • Windows 11 Version 25H2 for ARM64-based Systems
  • Windows 11 Version 25H2 for x64-based Systems
  • Windows 11 Version 24H2 for ARM64-based Systems

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C