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

Source: https://junglewise.ai/threats/cve-2026-45600-microsoft-windows-kernel-mode-drivers-type-confusion-privilege  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-09. Updated: 2026-06-09  
License: CC BY 4.0 with a link back

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](https://junglewise.ai/threats/technologies/windows-kernel-mode-drivers). Vendors: [Microsoft](https://junglewise.ai/threats/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

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45600](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45600)

## Related threats

- [Windows Kernel-Mode Drivers heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-85871-heap-based-buffer-overflow-in-windows-kernel-mode-drivers-allows)
- [Microsoft Windows use after free in Kernel-Mode Drivers](https://junglewise.ai/threats/cve-2026-34332-microsoft-windows-use-after-free-in-kernel-mode-drivers)