Is CVE-2026-113861 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-113861 being exploited in the wild.

How severe is CVE-2026-113861?

High severity, with a CVSS score of 7.5, published 10 November 2026.

Is there a fix for CVE-2026-113861?

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-2026-113861 attacked?

It is attacked with local access, in an operating system.

Am I affected by CVE-2026-113861?

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.

CVE-2026-113861: Microsoft Windows Hyper-V use-after-free privilege elevation

CVE-2026-113861 · Severity: high · CVSS 7.5 · Published 2026-11-10

Windows Hyper-V, Microsoft's virtualization platform, contains a use-after-free vulnerability that allows an authorized local user to escalate their privileges and gain elevated system access. An attacker with valid credentials on a system running Hyper-V could exploit this flaw to execute code with higher privileges, potentially compromising the entire system and any virtual machines it hosts.

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

Quick answers

Is CVE-2026-113861 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-113861 being exploited in the wild.
How severe is CVE-2026-113861?: High severity, with a CVSS score of 7.5, published 10 November 2026.
Which products and versions are affected?: Microsoft Windows Hyper-V <UNKNOWN>.
Is there a fix for CVE-2026-113861?: 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-2026-113861 attacked?: It is attacked with local access, in an operating system.
Am I affected by CVE-2026-113861?: 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 use-after-free vulnerability in Windows Hyper-V allows an authenticated local attacker to elevate privileges. The vulnerability requires local access and prior authentication; exploitation leads to privilege escalation. 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-2026-113861

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