CVE-2026-119934: Microsoft Remote Desktop Client double free memory corruption

CVE-2026-119934 · Severity: high · CVSS 8.8 · Published 2026-11-10

A memory corruption vulnerability in Microsoft Remote Desktop Client allows an attacker to execute arbitrary code on a user's computer over the network. An attacker can exploit this flaw by sending specially crafted packets during a remote desktop connection, potentially gaining full control of the victim's system without requiring any user interaction or authentication.

Technologies: Microsoft Remote Desktop Client. Vendors: Microsoft.

Quick answers

Is CVE-2026-119934 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-119934 being exploited in the wild.
How severe is CVE-2026-119934?
High severity, with a CVSS score of 8.8, published 10 November 2026.
Which products and versions are affected?
Microsoft Remote Desktop Client.
Is there a fix for CVE-2026-119934?
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-2026-119934 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-119934?
Check whether you run Microsoft Remote Desktop Client. 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

A double free vulnerability exists in Microsoft Remote Desktop Client's memory management, triggered by network-supplied input during RDP protocol handling. The flaw allows remote code execution with no authentication required, as the vulnerability exists in the initial connection phase accessible to unauthenticated attackers on the network.

Affected products

  • Microsoft Remote Desktop Client

Timeline

  • 2026-11-10: disclosed

References

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