CVE-2008-3893: Microsoft Windows Vista

Medium severity, CVSS 5.5. EPSS: 1.5% chance of exploitation in the next 30 days.

Microsoft Bitlocker in Windows Vista before SP1 stores pre-boot authentication passwords in the BIOS Keyboard buffer and does not clear this buffer during boot, which allows local users to obtain sensitive information by reading the physical memory locations associated with this buffer.

Affected products

• Microsoft Windows Vista: any version

Published 2008-09-03. Last modified 2026-06-16.