CVE-2026-88119: 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 6.3.9600.23470Patch KB5126836 - 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 10.0.26100.33650Patch KB5126646 - 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 10.0.17763.9376Patch KB5126651 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.2.9200.26434Patch KB5126835
Event History
Frequently Asked Questions
Does exploitation require credentials or user interaction?
No. The vector indicates no privileges are required and no user interaction is needed. An attacker can target the service remotely over the network.
How easy is exploitation expected to be?
The attack complexity is rated High, meaning exploitation requires conditions beyond simply reaching the affected service. The provided data does not identify those conditions.
Which systems should be prioritized for review?
Review deployments running Microsoft Windows DHCP Server on Windows Server 2012, 2012 R2, 2016, 2019, 2022, or 2025. The data does not state whether systems without the DHCP Server role installed are affected.