CVE-2026-88171: Windows DHCP Server Remote Code Execution Vulnerability
Double 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 6.2.9200.26434Patch KB5126835 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5761Patch KB5126655 - Upgrade
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Fixed in 6.3.9600.23470Patch KB5126836 - 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 10.0.26100.33650Patch KB5126646 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.14393.9612Patch KB5126868
Event History
Frequently Asked Questions
What does an attacker need to exploit this issue?
The attack vector is network-based and requires no privileges or user interaction. The CVSS vector indicates high attack complexity, so exploitation requires conditions beyond simply reaching the target over the network.
Which Microsoft platforms are identified as affected?
The affected software list includes Microsoft Windows 10 and Windows Server 2012, 2012 R2, 2016, 2019, 2022, and 2025, along with Microsoft Windows DHCP Server.
What is the potential impact if exploitation succeeds?
Successful exploitation can allow code execution. The CVSS metrics rate confidentiality, integrity, and availability impact as high.