Executive brief
A heap buffer overflow vulnerability exists in Windows Partition Management Driver that allows an authenticated attacker to overflow memory buffers and gain elevated system privileges on an affected machine. Successful exploitation could enable an attacker to take complete control of the system, install malware, or access sensitive corporate data.
Technical details
A heap-based buffer overflow vulnerability exists in the Windows Partition Management Driver, a privileged kernel-mode component responsible for managing disk partitions and storage operations. The vulnerability stems from inadequate bounds checking when processing partition-related requests. The attack requires local access and administrative or privileged user context; the attacker must be an authorized local user who can interact with the driver. Successful exploitation allows an attacker to overflow heap memory, potentially corrupting kernel structures and achieving privilege escalation to SYSTEM level. A patch is available from Microsoft.
Affected products
- Microsoft Windows Multiple versions affected (specific range not provided in advisory)
Timeline
- 2026-09-08: disclosed: CVE-2026-69492 published on NVD