CVE-2026-96929: Microsoft Windows Kernel heap-based buffer overflow

CVE-2026-96929 · Severity: high · CVSS 7.8 · Published 2026-10-13

A heap-based buffer overflow vulnerability in the Windows Kernel could allow an authorized attacker to elevate their privileges to a higher level on a Windows system. This could enable an attacker with limited user account access to gain full system control and compromise the entire computer.

Technologies: Microsoft Windows Kernel. Vendors: Microsoft.

Quick answers

Is CVE-2026-96929 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-96929 being exploited in the wild.
How severe is CVE-2026-96929?
High severity, with a CVSS score of 7.8, published 13 October 2026.
Which products and versions are affected?
Microsoft Windows Kernel.
Is there a fix for CVE-2026-96929?
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-2026-96929 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2026-96929?
Check whether you run Microsoft Windows Kernel. 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 heap-based buffer overflow exists in the Windows Kernel that permits privilege escalation. The vulnerability requires local access and valid user credentials to exploit; an attacker with an authorized account can overflow a heap buffer to gain elevated privileges and system-level code execution.

Affected products

  • Microsoft Windows Kernel

Timeline

  • 2026-10-13: disclosed

References

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