CVE-2026-70124: 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 10.0.14393.9512Patch KB5123099 - 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 6.3.9600.23397Patch KB5123066 - 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?
The issue affects Windows DHCP Server on the listed Microsoft Windows 10 and Windows Server 2012, 2012 R2, 2016, 2019, 2022, and 2025 products. Exposure is limited to systems where the Windows DHCP Server role is present and reachable over the network.
What does an attacker need to exploit it?
An attacker can attempt exploitation over the network without authentication or user interaction. The published vector rates attack complexity as high, so exploitation requires conditions or techniques beyond sending a simple request.
What is the expected impact if exploitation succeeds?
Successful exploitation can disclose information through an out-of-bounds read in Windows DHCP Server. The supplied impact ratings identify high confidentiality impact, with no integrity or availability impact.