# CVE-2026-119385: Microsoft Windows Hyper-V race condition denial of service

Source: https://junglewise.ai/threats/cve-2026-119385-concurrent-execution-using-shared-resource-with-improper  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-119385 · Severity: medium · CVSS 4.7 · Published 2026-11-10

Windows Hyper-V, Microsoft's virtualization platform for hosting virtual machines on Windows servers, contains a race condition that allows an authorized user to cause a denial of service. An attacker with local access and valid credentials could exploit this synchronization flaw to crash or hang the Hyper-V system, disrupting virtual machine availability.

Technologies: [Microsoft Windows Hyper-V](https://junglewise.ai/threats/technologies/windows-hyper-v). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-119385 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-119385 being exploited in the wild.

**How severe is CVE-2026-119385?** Medium severity, with a CVSS score of 4.7, published 10 November 2026.

**Which products and versions are affected?** Microsoft Windows Hyper-V <UNKNOWN>.

**Is there a fix for CVE-2026-119385?** 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-2026-119385 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2026-119385?** Check whether you run Microsoft Windows Hyper-V 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

A race condition exists in Windows Hyper-V's handling of shared resources due to improper synchronization, allowing concurrent execution to trigger the vulnerability. An authorized local attacker with appropriate privileges can exploit this condition to cause a denial of service on the Hyper-V host. The vulnerability requires local access and valid credentials on the host system.

## Affected products

- Microsoft Windows Hyper-V <UNKNOWN>

## Timeline

- 2026-11-10: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-119385](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-119385)

## Related threats

- [Microsoft Windows Hyper-V null pointer dereference DoS](https://junglewise.ai/threats/cve-2026-96965-null-pointer-dereference-in-windows-hyper-v-allows-an-authorized)
- [Microsoft Windows Hyper-V certificate validation bypass](https://junglewise.ai/threats/cve-2026-95910-improper-certificate-validation-in-windows-hyper-v-allows-an)
- [Microsoft Windows Hyper-V uninitialized resource privilege escalation](https://junglewise.ai/threats/cve-2026-119960-use-of-uninitialized-resource-in-windows-hyper-v-allows-an)
- [Windows Hyper-V access control spoofing vulnerability](https://junglewise.ai/threats/cve-2026-119959-improper-access-control-in-windows-hyper-v-allows-an-authorized)
- [Windows Hyper-V use-after-free privilege elevation](https://junglewise.ai/threats/cve-2026-119826-use-after-free-in-windows-hyper-v-allows-an-authorized-attacker)