CVE-2026-42987 Windows Deployment Services (WDS) Remote Code Execution
An unauthorized attacker can execute arbitrary code remotely via a use-after-free vulnerability in Windows Deployment Services.
- 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-2026-42987?
CVE-2026-42987 is a high-severity use after free vulnerability in Microsoft Windows Server 2012, published on 9 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Use after free in Windows Deployment Services allows an unauthorized attacker to execute code over a network.
Weakness: CWE-416
Which versions are affected by CVE-2026-42987?
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-2026-42987?
No fix has been published for CVE-2026-42987 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-2026-42987 being exploited?
There is no known exploitation of CVE-2026-42987 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-9wx6-gp73-qg3j.