CVE-2026-70033: Microsoft Remote Desktop Gateway Service memory leak denial of service

CVE-2026-70033 · Severity: high · CVSS 7.5 · Published 2026-10-13

Microsoft Remote Desktop Gateway Service, a component that manages remote access to internal resources, contains a memory leak vulnerability. An unauthenticated network attacker can exploit this flaw to cause the service to exhaust available memory and become unavailable, disrupting remote access for legitimate users.

Technologies: Microsoft Remote Desktop Gateway Service, Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows Server 2012, Microsoft Windows Server 2016, Microsoft Windows Server 2019, Microsoft Windows Server 2022, Microsoft Windows Server 2025. Vendors: Microsoft.

Quick answers

Is CVE-2026-70033 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-70033 being exploited in the wild.
How severe is CVE-2026-70033?
High severity, with a CVSS score of 7.5, published 13 October 2026.
Which products and versions are affected?
Microsoft Remote Desktop Gateway Service <UNKNOWN>.
Is there a fix for CVE-2026-70033?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-70033 attacked?
It is attacked over the network, in an operating system.
Am I affected by CVE-2026-70033?
Check whether you run Microsoft Remote Desktop Gateway Service, Microsoft Windows 10 1607, Microsoft Windows 10 1809 or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is a memory leak (use-after-free or failure to release memory) in the Remote Desktop Gateway Service that can be triggered over the network without authentication. An attacker can send crafted network traffic to repeatedly trigger the leak, causing memory exhaustion and denial of service to the affected system.

Affected products

  • Microsoft Remote Desktop Gateway Service <UNKNOWN>

Timeline

  • 2026-10-13: disclosed

References

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