CVE-2016-3227 Use after free in n/a
Remote attackers can execute arbitrary code on Windows Server via crafted requests to the DNS Server component.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2016-3227?
CVE-2016-3227 is a critical use after free vulnerability in Microsoft Windows Server 2012, published on 16 Jun 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Use-after-free vulnerability in the DNS Server component in Microsoft Windows Server 2012 Gold and R2 allows remote attackers to execute arbitrary code via crafted requests, aka "Windows DNS Server Use After Free Vulnerability."
Which versions are affected by CVE-2016-3227?
It affects 1 product.
Products include Microsoft Windows Server 2012.
How do I fix CVE-2016-3227?
No fix has been published for CVE-2016-3227 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-2016-3227 being exploited?
There is no known exploitation of CVE-2016-3227 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows Server 2012
- CVE-2025-59287 Microsoft Windows Server Update Service (WSUS) Deserialization of Untrusted Data
- CVE-2026-69595 Windows Services for NFS ONCRPC XDR Driver Remote Code Execution Vulnerability
- CVE-2026-78445 Windows Services for NFS ONCRPC XDR Driver Remote Code Execution Vulnerability
- CVE-2026-41089 Windows Netlogon Remote Code Execution Vulnerability
- CVE-2024-43639 Windows KDC Proxy Remote Code Execution Vulnerability
Sources
Also known as GHSA-wpxq-2qxf-q435.