CVE-2023-23400 Windows DNS Server Remote Code Execution Vulnerability
Remote attackers can execute arbitrary code on Windows DNS Server via a heap-based buffer overflow vulnerability.
- 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-2023-23400?
CVE-2023-23400 is a high-severity memory corruption vulnerability in Microsoft Windows Server 2012, published on 14 Mar 2023. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Windows DNS Server Remote Code Execution Vulnerability
Weakness: CWE-122
Which versions are affected by CVE-2023-23400?
It affects 4 products.
Products include Microsoft Windows Server 2012, Microsoft Windows Server 2016, Microsoft Windows Server 2019, Microsoft Windows Server 2022.
How do I fix CVE-2023-23400?
No fix has been published for CVE-2023-23400 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2023-23400 being exploited?
There is no known exploitation of CVE-2023-23400 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-fh3r-82wq-4j58.