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