CVE-2026-70250 Windows DHCP Client Remote Code Execution Vulnerability
An attacker on an adjacent network can execute arbitrary code via a use-after-free flaw in the Windows DHCP Client.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-70250?
CVE-2026-70250 is a high-severity use after free vulnerability in Microsoft Windows Server 2012, published on 13 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Use after free in Windows DHCP Client allows an unauthorized attacker to execute code over an adjacent network.
Which versions are affected by CVE-2026-70250?
It affects 5 products.
Products include Microsoft Windows Server 2012, Microsoft Windows Server 2016, Microsoft Windows Server 2019, Microsoft Windows Server 2022, Microsoft Windows Server 2025.
How do I fix CVE-2026-70250?
No fix has been published for CVE-2026-70250 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-2026-70250 being exploited?
There is no known exploitation of CVE-2026-70250 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-mfg7-c74w-738f.