CVE-2026-113773: Microsoft Windows DHCP Server improper access control

CVE-2026-113773 · Severity: medium · CVSS 5.3 · Published 2026-11-10

Windows DHCP Server, a network service that assigns IP addresses to devices, contains an access control flaw that allows an attacker on the network to spoof DHCP messages without authentication. An attacker could intercept or manipulate network traffic intended for legitimate devices, potentially redirecting traffic or causing network disruption.

Technologies: Microsoft Windows DHCP Server. Vendors: Microsoft.

Quick answers

Is CVE-2026-113773 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-113773 being exploited in the wild.
How severe is CVE-2026-113773?
Medium severity, with a CVSS score of 5.3, published 10 November 2026.
Which products and versions are affected?
Microsoft Windows DHCP Server.
Is there a fix for CVE-2026-113773?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-113773 attacked?
It is attacked over the network.
Am I affected by CVE-2026-113773?
Check whether you run Microsoft Windows DHCP Server. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is an improper access control issue in Windows DHCP Server that permits unauthenticated network-based DHCP spoofing attacks. The flaw allows an attacker on the network to forge DHCP responses or other messages that should require proper authorization. An attacker gains the ability to manipulate DHCP allocations and potentially redirect network traffic.

Affected products

  • Microsoft Windows DHCP Server

Timeline

  • 2026-11-10: disclosed

References

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