CVE-2026-54990

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

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54990	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:microsoft:windows_11_24h2:::::::arm64:*
	cpe:2.3:o:microsoft:windows_11_24h2:::::::x64:*
	cpe:2.3:o:microsoft:windows_11_25h2:::::::arm64:*
	cpe:2.3:o:microsoft:windows_11_25h2:::::::x64:*
	cpe:2.3:o:microsoft:windows_11_26h1:::::::x64:*
	cpe:2.3:o:microsoft:windows_11_26h1:::::::arm64:*
	cpe:2.3:o:microsoft:windows_server_2025::::::::

History

No history.

Information

Published : 2026-07-14 17:17

Updated : 2026-07-22 16:18

NVD link : CVE-2026-54990

Mitre link : CVE-2026-54990

CVE.ORG link : CVE-2026-54990

JSON object : View

Products Affected

microsoft

windows_11_26h1
windows_11_24h2
windows_server_2025
windows_11_25h2

CWE

CWE-122

Heap-based Buffer Overflow

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