CVE-2026-119849: Microsoft Virtual Hard Disk Miniport Driver stack buffer overflow

CVE-2026-119849 · Severity: high · CVSS 7 · Published 2026-11-10

The Virtual Hard Disk (VHD) Miniport Driver, which manages storage hardware for Windows systems, contains a stack-based buffer overflow vulnerability. An authorized local attacker can exploit this to execute arbitrary code with elevated privileges, potentially compromising the entire system.

Technologies: Microsoft Virtual Hard Disk Miniport Driver. Vendors: Microsoft.

Quick answers

Is CVE-2026-119849 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-119849 being exploited in the wild.
How severe is CVE-2026-119849?
High severity, with a CVSS score of 7, published 10 November 2026.
Which products and versions are affected?
Microsoft Virtual Hard Disk Miniport Driver.
Is there a fix for CVE-2026-119849?
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-2026-119849 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2026-119849?
Check whether you run Microsoft Virtual Hard Disk Miniport Driver. 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 stack-based buffer overflow exists in the VHD Miniport Driver that can be triggered by a local, authenticated attacker. The vulnerability allows arbitrary code execution in kernel context once exploited. The vulnerability requires local access and existing authorization to trigger.

Affected products

  • Microsoft Virtual Hard Disk Miniport Driver

Timeline

  • 2026-11-10: disclosed

References

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