CVE-2026-84012

Analyzed Analyzed - Analysis Complete

Double Free in Windows Remote Desktop Gateway Service

Publication date: 2026-10-13

Last updated on: 2026-10-19

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

2026-10-19

Generated

2026-11-08

AI Q&A

2026-10-14

EPSS Evaluated

2026-11-07

NVD

CVE-2026-84012

EUVD

EUVD-2026-99448

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_server_2012	r2
microsoft	windows_server_2012	*
microsoft	windows_10_1607	to 10.0.14393.9612 (exc)
microsoft	windows_10_1607	to 10.0.14393.9612 (exc)
microsoft	windows_10_1809	to 10.0.17763.9376 (exc)
microsoft	windows_10_1809	to 10.0.17763.9376 (exc)
microsoft	windows_server_2016	to 10.0.14393.9612 (exc)
microsoft	windows_server_2019	to 10.0.17763.9376 (exc)
microsoft	windows_server_2025	to 10.0.26100.33650 (exc)
microsoft	windows_server_2022	to 10.0.20348.5761 (exc)

Helpful Resources

Exploitability

CWE

KEV

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

Attack-Flow Graph

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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