Quick answers
- Is CVE-2026-88171 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-88171 being exploited in the wild.
- How severe is CVE-2026-88171?
- High severity, with a CVSS score of 8.1, published 13 October 2026.
- Which products and versions are affected?
- Microsoft Windows DHCP Server.
- Is there a fix for CVE-2026-88171?
- 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-2026-88171 attacked?
- It is attacked over the network, in an operating system.
- Am I affected by CVE-2026-88171?
- Check whether you run Microsoft Windows DHCP Server, Microsoft Windows 10 1607, Microsoft Windows 10 1809 or one of the others listed. 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
A double free vulnerability exists in Windows DHCP Server that can be triggered remotely by an unauthenticated attacker over the network. The vulnerability allows arbitrary code execution in the context of the DHCP Server service. This is a memory corruption flaw that an attacker can exploit without requiring special authentication or user interaction.
Affected products
- Microsoft Windows DHCP Server
Timeline
- 2026-10-13: disclosed