CVE-2026-119960: Microsoft Windows Hyper-V uninitialized resource privilege escalation

CVE-2026-119960 · Severity: high · CVSS 7.5 · Published 2026-11-10

Windows Hyper-V, virtualization software that runs on enterprise servers, contains a flaw that allows an authorized local attacker to elevate their privileges. An attacker with limited access to a Hyper-V system could gain full system control, potentially leading to data theft, system compromise, or lateral movement to other systems on the network.

Technologies: Microsoft Windows Hyper-V. Vendors: Microsoft.

Quick answers

Is CVE-2026-119960 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-119960 being exploited in the wild.
How severe is CVE-2026-119960?
High severity, with a CVSS score of 7.5, published 10 November 2026.
Which products and versions are affected?
Microsoft Windows Hyper-V.
Is there a fix for CVE-2026-119960?
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-2026-119960 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2026-119960?
Check whether you run Microsoft Windows Hyper-V. 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 use-of-uninitialized-resource vulnerability in Windows Hyper-V allows an authenticated local attacker to achieve privilege escalation. The vulnerability requires local access and existing authorization on the target system. A successful exploit grants elevated privileges to the attacker.

Affected products

  • Microsoft Windows Hyper-V

Timeline

  • 2026-11-10: disclosed

References

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