# CVE-2026-119884: Windows Kernel heap-based buffer overflow

Source: https://junglewise.ai/threats/cve-2026-119884-heap-based-buffer-overflow-in-windows-kernel-allows-an  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-119884 · Severity: medium · CVSS 6.8 · Published 2026-11-10

A memory corruption defect in the Windows Kernel allows an attacker with physical access to a device to run code with elevated system privileges. An attacker could use this to take full control of the compromised machine, install malware, or access sensitive data.

Technologies: [Microsoft Windows Kernel](https://junglewise.ai/threats/technologies/windows-kernel). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-119884 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-119884 being exploited in the wild.

**How severe is CVE-2026-119884?** Medium severity, with a CVSS score of 6.8, published 10 November 2026.

**Which products and versions are affected?** Microsoft Windows Kernel.

**Is there a fix for CVE-2026-119884?** 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-2026-119884 attacked?** It is attacked with physical access.

**Am I affected by CVE-2026-119884?** 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 in the Windows Kernel allows privilege escalation when exploited with physical access to the machine. The vulnerability requires physical attack vector and results in privilege elevation, allowing arbitrary code execution in kernel context.

## Affected products

- Microsoft Windows Kernel

## Timeline

- 2026-11-10: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-119884](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-119884)

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