CVE-2026-84012
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Double Free in Windows Remote Desktop Gateway Service

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Microsoft Corporation

Description
Double free in Remote Desktop Gateway Service allows an unauthorized attacker to execute code over a network.

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Meta Information

Published
2026-10-13
Last Modified
2026-10-13
Generated
2026-10-19
AI Q&A
2026-10-14
EPSS Evaluated
2026-10-18
NVD
CVE-2026-84012
EUVD
EUVD-2026-99448

Affected Vendors & Products

Showing 13 associated CPEs
Vendor Product Version / Range
Microsoft Windows 10 Version 1607 10.0.14393.0
Microsoft Windows 10 Version 1809 10.0.17763.0
Microsoft Windows Server 2012 6.2.9200.0
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0
Microsoft Windows Server 2012 R2 6.3.9600.0
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0
Microsoft Windows Server 2016 10.0.14393.0
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0
Microsoft Windows Server 2019 10.0.17763.0
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0
Microsoft Windows Server 2022 10.0.20348.0
Microsoft Windows Server 2025 10.0.26100.0
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-415 The product calls free() twice on the same memory address.

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Executive Summary

This vulnerability is a double free issue in the Remote Desktop Gateway Service. A double free occurs when a program frees a memory block twice, which can lead to memory corruption and allow an attacker to execute arbitrary code remotely over a network without authentication.

Impact Analysis

An attacker could exploit this to run malicious code on your system, potentially taking control of it. This could lead to data theft, installation of malware, or disruption of services if the affected service is running on your Windows server or workstation.

Mitigation Strategies

Apply the latest security updates from Microsoft for the Remote Desktop Gateway Service to patch the double free vulnerability. Monitor Microsoft's security advisories for updates and ensure network firewalls restrict unauthorized access to the Remote Desktop Gateway Service ports.

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