# CVE-2026-119830: Windows Storport Miniport Driver heap overflow

Source: https://junglewise.ai/threats/cve-2026-119830-heap-based-buffer-overflow-in-windows-storport-miniport-driver  
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-2026-119830 · Severity: medium · CVSS 6.8 · Published 2026-11-10

A heap buffer overflow flaw in Windows Storport Miniport Driver allows an attacker with physical access to a computer to execute code with elevated system privileges. This could lead to complete compromise of the affected system through privilege escalation.

Technologies: [Microsoft Windows Storport Miniport Driver](https://junglewise.ai/threats/technologies/windows-storport-miniport-driver). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-119830 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-119830 being exploited in the wild.

**How severe is CVE-2026-119830?** Medium severity, with a CVSS score of 6.8, published 10 November 2026.

**Which products and versions are affected?** Microsoft Windows Storport Miniport Driver.

**Is there a fix for CVE-2026-119830?** 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-2026-119830 attacked?** It is attacked with physical access, in device firmware.

**Am I affected by CVE-2026-119830?** Check whether you run Microsoft Windows Storport Miniport Driver. 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 Storport Miniport Driver that can be triggered via a physical attack vector. An attacker with direct hardware access can exploit this memory corruption vulnerability to achieve privilege escalation and execute arbitrary code with system-level privileges.

## Affected products

- Microsoft Windows Storport Miniport Driver

## Timeline

- 2026-11-10: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-119830](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-119830)

## Related threats

- [Windows Storport Miniport Driver numeric truncation information disclosure](https://junglewise.ai/threats/cve-2026-119875-numeric-truncation-error-in-windows-storport-miniport-driver)
- [Windows Storport Miniport Driver heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-119823-heap-based-buffer-overflow-in-windows-storport-miniport-driver)
- [Windows Storport Miniport Driver use after free](https://junglewise.ai/threats/cve-2026-69765-use-after-free-in-windows-storport-miniport-driver-allows-an)
- [Microsoft Windows Storport Miniport Driver null pointer dereference](https://junglewise.ai/threats/cve-2026-34350-microsoft-windows-storport-miniport-driver-null-pointer)