CVE-2026-69845: Windows DHCP Server Remote Code Execution Vulnerability
Heap-based buffer overflow 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 10.0.14393.9512Patch KB5123099 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.2.9200.26349Patch KB5123065 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.3.9600.23397Patch KB5123066 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33438Patch KB5122871 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5622Patch KB5122882 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.9245Patch KB5122876
Event History
Frequently Asked Questions
Does an attacker need credentials or user interaction to exploit this issue?
No. The vulnerability is rated as requiring no privileges and no user interaction, and it can be exploited over a network by an unauthorized attacker.
Which systems should be prioritized for review?
Prioritize Windows systems running the DHCP Server service on the listed platforms: Windows 10; Windows Server 2012, 2012 R2, 2016, 2019, 2022, and 2025.
What could a successful exploit allow?
Successful exploitation could allow remote code execution and is assessed as having high impact to confidentiality, integrity, and availability.