CVE-2026-58626 Windows Remote Desktop Services Remote Code Execution Vulnerability
An authorized attacker can execute arbitrary code over the network via a use-after-free flaw in Windows Remote Desktop Services.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-58626?
CVE-2026-58626 is a high-severity use after free vulnerability in Microsoft Windows 10 21h2, published on 14 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Use after free in Windows Remote Desktop Services allows an authorized attacker to execute code over a network.
Weakness: CWE-416
Which versions are affected by CVE-2026-58626?
It affects 7 products.
Products include Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, Microsoft Windows 11 24h2, Microsoft Windows 11 25h2, Microsoft Windows 11 26h1, Microsoft Windows Server 2022 and 1 more.
How do I fix CVE-2026-58626?
No fix has been published for CVE-2026-58626 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-58626 being exploited?
There is no known exploitation of CVE-2026-58626 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 10 21h2
- CVE-2025-21333 Microsoft Windows Hyper-V NT Kernel Integration VSP Heap-based Buffer Overflow
- CVE-2025-21334 Microsoft Windows Hyper-V NT Kernel Integration VSP Use-After-Free
- CVE-2025-21335 Microsoft Windows Hyper-V NT Kernel Integration VSP Use-After-Free
- CVE-2026-42904 Windows TCP/IP Elevation of Privilege Vulnerability
- CVE-2026-105733 Windows Hyper-V Remote Code Execution Vulnerability
Sources
Also known as GHSA-h9cr-8qw2-fhg7.