Vulnerability · NVD
CVE-2026-56159
CRITICAL 9.8
Heap-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
Attack vector : Network
No privileges required
No user interaction
Show raw CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
1.00%
above median
percentile 59.5%
OS versions that fix this CVE
This CVE is resolved by the following OS security releases. Update the OS to at least the listed version.
- Windows Server 2025 Fixed in 10.0.26100.33158
- Windows Server 2022 Fixed in 10.0.20348.5386
- Windows Server 2019 Fixed in 10.0.17763.9020
- Windows Server 2016 Fixed in 10.0.14393.9339
- Windows 10 1809 · 2018-09 Fixed in 10.0.17763.9020
- Windows 10 1607 · 2016-07 Fixed in 10.0.14393.9339