CVE-2026-84012

8.1High

Published 13 Oct 2026 · NVD status: Undergoing Analysis · AI triage by gemini-3.8-flash

8.1High

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: None
Impact: Full C/I/A compromise
Weakness: CWE-415

Impact

Unauthenticated attackers can execute arbitrary code over the network against the Remote Desktop Gateway Service. They only need network connectivity to the service port.

Root cause

A double-free condition in the Remote Desktop Gateway Service allows memory corruption during network processing.

Affected systems

Versions not listed — check the vendor advisory.

CVSS v3.1 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Fix & remediation

Install the security update from Microsoft as soon as available. If patching must wait, block inbound traffic to the Remote Desktop Gateway port (TCP/UDP 443 by default) or stop the RD Gateway service.

shell

$ Stop-Service -Name TSGateway -Force

AI-suggested. Run it in staging first and check it against the vendor advisory. Why?

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NVD description

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

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-84012

Source: nvd.nist.gov/vuln/detail/CVE-2026-84012