CVE-2026-61920 Windows DNS Server Remote Code Execution Vulnerability
An authorized attacker can execute code remotely on Windows DNS Server due to a race condition in shared resource handling.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-61920?
CVE-2026-61920 is a medium-severity vulnerability in Microsoft Windows 10 1607, published on 11 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows DNS allows an authorized attacker to execute code over a network.
Which versions are affected by CVE-2026-61920?
It affects 8 products.
Products include Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 11 26h1, Microsoft Windows Server 2012, Microsoft Windows Server 2016, Microsoft Windows Server 2019 and 2 more.
How do I fix CVE-2026-61920?
No fix has been published for CVE-2026-61920 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-61920 being exploited?
There is no known exploitation of CVE-2026-61920 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 10 1607
- CVE-2026-33824 Microsoft Internet Key Exchange (IKE) Service Extensions Double Free
- CVE-2026-21510 Microsoft Windows Shell Protection Mechanism Failure
- CVE-2026-21513 Microsoft MSHTML Framework Protection Mechanism Failure
- CVE-2023-32049 Microsoft Windows Defender SmartScreen Security Feature Bypass
- CVE-2023-29360 Microsoft Streaming Service Untrusted Pointer Dereference
Sources
Also known as GHSA-q7cm-j53p-gvff.