CVE-2026-56159

CriticalCVSS 9.8

Published: 14/07/2026(UTC)Updated: 21/07/2026(UTC)Translated: 22/07/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Elevated risk

0.83%

54th percentile - higher than 54% of all known CVEs

A heap-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code remotely over a network.

An attacker could take control of the DHCP server, compromising network service integrity and availability within the organization.

Apply the security update provided by the vendor immediately and restrict trusted DHCP traffic sources in the network.

Original NVD description (English source)

Heap-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over a network.