CVE-2026-97805: Windows Partition Management Driver out-of-bounds read

CVE-2026-97805 · Severity: critical · CVSS 9.8 · Published 2026-10-13

A flaw in the Windows Partition Management Driver allows a remote attacker to execute arbitrary code on affected systems without authentication. This out-of-bounds memory read can be exploited over the network to gain complete control of a computer, posing a critical risk to enterprise and consumer systems.

Technologies: Microsoft Windows, Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, Microsoft Windows 11 23h2, Microsoft Windows 11 24h2, Microsoft Windows 11 25h2, Microsoft Windows 11 26h1, Microsoft Windows 11 26h2, Microsoft Windows Server 2012, Microsoft Windows Server 2016, Microsoft Windows Server 2019, Microsoft Windows Server 2022, Microsoft Windows Server 2025. Vendors: Microsoft.

Quick answers

Is CVE-2026-97805 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-97805 being exploited in the wild.
How severe is CVE-2026-97805?
Critical severity, with a CVSS score of 9.8, published 13 October 2026.
Which products and versions are affected?
Microsoft Windows <UNKNOWN>.
Is there a fix for CVE-2026-97805?
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-2026-97805 attacked?
It is attacked over the network, in an operating system.
Am I affected by CVE-2026-97805?
Check whether you run Microsoft Windows, Microsoft Windows 10 1607, Microsoft Windows 10 1809 or one of the others listed 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

An out-of-bounds read vulnerability in the Windows Partition Management Driver permits remote code execution via network vector without requiring prior authentication or user interaction. The vulnerability affects the driver's memory handling logic, allowing an attacker to read beyond allocated buffer boundaries and potentially execute arbitrary code with kernel privileges.

Affected products

  • Microsoft Windows <UNKNOWN>

Timeline

  • 2026-10-13: disclosed

References

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