CVE-2026-44815 DHCP Client Service Remote Code Execution Vulnerability

Critical 9.8 Published Updated

An unauthorized attacker can execute arbitrary code remotely via a stack-based buffer overflow in the Windows DHCP Client service.

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-2026-44815?

CVE-2026-44815 is a critical memory corruption vulnerability in Microsoft Windows 10 1607, published on 9 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Stack-based buffer overflow in Windows DHCP Client allows an unauthorized attacker to execute code over a network.

Weakness: CWE-121

Which versions are affected by CVE-2026-44815?

It affects 13 products.

Products include Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, Microsoft Windows 11 23h2, Microsoft Windows 11 24h2 and 7 more.

How do I fix CVE-2026-44815?

No fix has been published for CVE-2026-44815 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-2026-44815 being exploited?

There is no known exploitation of CVE-2026-44815 in the wild and no public exploit code.

All Microsoft Windows 10 1607 vulnerabilities

Sources

Also known as GHSA-wwrj-9chx-qprx.

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