Quick answers
- Is CVE-2026-105557 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-105557 being exploited in the wild.
- How severe is CVE-2026-105557?
- Medium severity, with a CVSS score of 5.9, published 10 November 2026.
- Which products and versions are affected?
- Microsoft Windows DHCP Server <UNKNOWN>.
- Is there a fix for CVE-2026-105557?
- 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-2026-105557 attacked?
- It is attacked over the network, in an operating system.
- Am I affected by CVE-2026-105557?
- Check whether you run Microsoft Windows DHCP Server at an affected version. 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 information disclosure flaw in Windows DHCP Server that exposes sensitive system information to an unauthorized control sphere. It is exploitable over the network and does not require authentication or user interaction. A remote attacker can disclose system information by sending specially crafted network requests.
Affected products
- Microsoft Windows DHCP Server <UNKNOWN>
Timeline
- 2026-11-10: disclosed