CVE-2026-45600: Microsoft Windows Kernel-Mode Drivers type confusion privilege escalation

CVE-2026-45600 · Severity: high · CVSS 7.8 · Published 2026-06-09

A security vulnerability exists in the core drivers that manage how the Windows operating system interacts with hardware. An attacker who already has basic access to a computer could exploit this flaw to gain full administrative control over the system. This could lead to the theft of sensitive data, the installation of malicious software, or a complete system takeover.

Technologies: Microsoft Windows Kernel-Mode Drivers. Vendors: Microsoft.

Quick answers

Is CVE-2026-45600 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-45600 being exploited in the wild.
How severe is CVE-2026-45600?
High severity, with a CVSS score of 7.8, published 9 June 2026.
Which products and versions are affected?
Microsoft Windows Kernel-Mode Drivers.
Is there a fix for CVE-2026-45600?
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-2026-45600 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2026-45600?
Check whether you run Microsoft Windows Kernel-Mode Drivers. 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 type confusion vulnerability (CWE-843) exists within Windows Kernel-Mode Drivers due to the improper handling of resources using incompatible types. The vulnerability is exploitable by a locally authenticated attacker with low privileges (PR:L) and requires no user interaction. By successfully exploiting this flaw, an attacker can achieve local privilege escalation (LPE), gaining SYSTEM-level access and full control over the affected host. Microsoft has released security updates to address this issue; users should apply the latest Windows cumulative updates to mitigate the risk.

Affected products

  • Microsoft Windows Kernel-Mode Drivers

Timeline

  • 2026-06-09: disclosed: Initial publication of the CVE record by Microsoft.
  • 2026-06-09: advisory: Microsoft Security Response Center (MSRC) published the vulnerability details and update guide.

References

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