CVE-2026-62823 Windows DHCP Server Remote Code Execution Vulnerability
An unauthorized attacker can execute arbitrary code on Windows DHCP Server via a heap-based buffer overflow over an adjacent network.
- 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-2026-62823?
CVE-2026-62823 is a high-severity memory corruption vulnerability in Microsoft Windows 10 1607, published on 11 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Heap-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over an adjacent network.
Weakness: CWE-122
Which versions are affected by CVE-2026-62823?
It affects 7 products.
Products include Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows Server 2012, Microsoft Windows Server 2016, Microsoft Windows Server 2019, Microsoft Windows Server 2022 and 1 more.
How do I fix CVE-2026-62823?
No fix has been published for CVE-2026-62823 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-2026-62823 being exploited?
There is no known exploitation of CVE-2026-62823 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 10 1607
- CVE-2026-33824 Microsoft Internet Key Exchange (IKE) Service Extensions Double Free
- CVE-2026-21510 Microsoft Windows Shell Protection Mechanism Failure
- CVE-2026-21513 Microsoft MSHTML Framework Protection Mechanism Failure
- CVE-2023-32049 Microsoft Windows Defender SmartScreen Security Feature Bypass
- CVE-2023-29360 Microsoft Streaming Service Untrusted Pointer Dereference
Sources
Also known as GHSA-2hvq-h28x-grj9.