Executive brief
A vulnerability in Microsoft's Volume Manager Driver could allow an attacker with local access and existing authorization to bypass security controls and gain higher privileges on the system. Successful exploitation could lead to unauthorized system access, data manipulation, or malware installation with elevated permissions.
Technical details
An integer overflow or wraparound vulnerability exists in the Volume Manager Driver, a core Windows component responsible for managing disk volumes and storage devices. The vulnerability requires the attacker to already have local system access and valid user credentials. By sending specially crafted input to the driver, an attacker can trigger integer overflow conditions that result in privilege escalation from user to administrator or system level. The attack vector is local only and does not require network access or user interaction beyond the initial authorized access.
Affected products
- Microsoft Windows
Timeline
- 2026-09-08: disclosed