CVE-2026-69679: Windows DHCP Server Denial of Service Vulnerability
Out-of-bounds read in Windows DHCP Server allows an authorized attacker to deny service over an adjacent network.
Other sources
Windows DHCP Server Denial of Service Vulnerability
— Microsoft
Affected Software
Remediation
Event History
Frequently Asked Questions
Who can exploit this vulnerability?
An attacker must be authorized and able to reach the DHCP Server from an adjacent network. The vulnerability does not indicate that unauthenticated or Internet-based attackers can exploit it.
What is the expected impact if exploitation succeeds?
Successful exploitation can deny service on the Windows DHCP Server. The provided information indicates availability impact only; it does not indicate confidentiality or integrity impact.
Which systems should be reviewed for exposure?
Review deployments of Windows DHCP Server on the listed Microsoft Windows 10 and Windows Server 2012, 2012 R2, 2016, 2019, 2022, and 2025 platforms. Exposure depends on the DHCP Server role being present and reachable from an adjacent network by an authorized attacker.