# CVE-2026-113865: Windows Hyper-V privilege escalation via race condition

Source: https://junglewise.ai/threats/cve-2026-113865-time-of-check-time-of-use-toctou-race-condition-in-windows-hyper  
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-2026-113865 · Severity: high · CVSS 7.8 · Published 2026-11-10

Windows Hyper-V, which manages virtual machines on corporate servers, contains a race condition that allows an already-authenticated attacker to escalate their privileges locally. An attacker with initial access to a system running Hyper-V could use this vulnerability to gain administrative control, potentially compromising the entire virtualization infrastructure and all hosted virtual machines.

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-2026-113865 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-113865 being exploited in the wild.

**How severe is CVE-2026-113865?** High severity, with a CVSS score of 7.8, published 10 November 2026.

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

**Is there a fix for CVE-2026-113865?** 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-2026-113865 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2026-113865?** 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 time-of-check time-of-use (TOCTOU) race condition in Windows Hyper-V enables privilege escalation when an authorized local attacker exploits a window between security validation and resource access. The vulnerability requires local access and an existing authenticated user account; exploitation results in elevation to higher privileges. A fix is available from Microsoft.

## Affected products

- Microsoft Windows Hyper-V <UNKNOWN>

## Timeline

- 2026-11-10: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-113865](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-113865)

## 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)