Junglewise Threat Intelligence

CVE-2026-69334: Microsoft Windows Volume Manager Extension Driver heap-based buffer overflow

CVE-2026-69334 · Severity: high · CVSS 8.8 · Published 2026-09-08

Vendors: Microsoft.

Executive brief

The Windows Volume Manager Extension Driver is a core Windows component that manages disk volumes and storage. A heap-based buffer overflow vulnerability allows remote attackers to execute arbitrary code on affected systems without authentication, potentially leading to complete system compromise.

Technical details

A heap-based buffer overflow exists in the Windows Volume Manager Extension Driver that can be triggered remotely without user authentication. The vulnerability allows an attacker with network access to send specially crafted input to the driver, overwriting heap memory and achieving arbitrary code execution with the privileges of the affected process. The attack vector is network-based with no authentication requirement, presenting a significant risk for remote exploitation.

Affected products

  • Microsoft Windows Volume Manager Extension Driver <UNKNOWN>

Timeline

  • 2026-09-08: disclosed

References