CVE-2026-49169 Windows DNS Server Remote Code Execution Vulnerability
An authorized attacker can execute arbitrary code remotely via a use-after-free flaw in the Windows DNS Server.
- 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-2026-49169?
CVE-2026-49169 is a high-severity use after free vulnerability in Microsoft Windows Server 2025, published on 14 Jul 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Use after free in DNS Server allows an authorized attacker to execute code over a network.
Weakness: CWE-416
Which versions are affected by CVE-2026-49169?
It affects 1 product.
Products include Microsoft Windows Server 2025.
How do I fix CVE-2026-49169?
No fix has been published for CVE-2026-49169 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-2026-49169 being exploited?
There is no known exploitation of CVE-2026-49169 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows Server 2025
- CVE-2026-69765 Windows Storport Miniport Driver Remote Code Execution Vulnerability
- CVE-2026-34332 Windows Kernel-Mode Driver Remote Code Execution Vulnerability
- CVE-2026-72928 Windows DNS Server Remote Code Execution Vulnerability
- CVE-2025-53779 Windows Kerberos Elevation of Privilege Vulnerability
- CVE-2026-20830 Capability Access Management Service (camsvc) Elevation of Privilege Vulnerability
Sources
Also known as GHSA-3f5f-3xp4-rx44.