CVE-2026-69416: Windows DHCP Server Denial of Service Vulnerability
Buffer over-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
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
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Fixed in 6.3.9600.23397Patch KB5123066 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.9245Patch KB5122876 - 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 10.0.26100.33438Patch KB5122871
Event History
Frequently Asked Questions
Who is exposed to this issue?
Systems running Windows DHCP Server on the listed Windows 10, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019, Windows Server 2022, or Windows Server 2025 platforms are in scope. Exploitation is limited to an adjacent-network attacker rather than an attacker anywhere on the internet.
What access does an attacker need to exploit it?
The attacker must be authorized, meaning they require low-level privileges before exploitation. No user interaction is required.
What is the expected impact?
Successful exploitation can deny service from Windows DHCP Server. The supplied assessment indicates no confidentiality or integrity impact.