CVE-2026-69930: Windows DHCP Server Information Disclosure Vulnerability
Out-of-bounds read in Windows DHCP Server allows an unauthorized attacker to disclose information over a network.
Other sources
Windows DHCP Server Information Disclosure 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 6.2.9200.26349Patch 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 10.0.14393.9512Patch KB5123099 - 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
Which systems are exposed to this issue?
Systems running Windows DHCP Server on the listed Microsoft Windows 10 and Windows Server 2012, 2012 R2, 2016, 2019, 2022, or 2025 platforms are the identified affected software. Exposure requires the DHCP Server service to be reachable over the network.
What does an attacker need to exploit it?
The vulnerability is exploitable remotely over a network by an unauthorized attacker. No privileges or user interaction are required, although the attack complexity is rated high.
What is the expected impact?
Successful exploitation can disclose information due to an out-of-bounds read in Windows DHCP Server. The supplied severity vector indicates high confidentiality impact, with no integrity or availability impact.