CVE-2026-88117: Windows DHCP Server Remote Code Execution Vulnerability
Use after free in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
Other sources
Windows DHCP Server Remote Code Execution Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33650Patch KB5126646 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.9376Patch KB5126651 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.14393.9612Patch KB5126868 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5761Patch KB5126655 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.2.9200.26434Patch KB5126835 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.3.9600.23470Patch KB5126836
Event History
Frequently Asked Questions
Which systems are exposed to this issue?
The affected products listed are Microsoft Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019, Windows Server 2022, and Windows Server 2025 running the Windows DHCP Server component.
Does an attacker need credentials or user interaction to exploit it?
No. The supplied vector indicates network access, no privileges required, and no user interaction required. Exploitation complexity is rated high.
What could a successful attack achieve?
A successful exploit could allow code execution on the affected Windows DHCP Server. The severity vector rates confidentiality, integrity, and availability impact as high.