CVE-2015-6856: Dell Pre-Boot Authentication Driver

High severity, CVSS 7.8. EPSS: 0.5% chance of exploitation in the next 30 days.

Dell Pre-Boot Authentication Driver (PBADRV.sys) 1.0.1.5 allows local users to write to arbitrary physical memory locations and gain privileges via a 0x0022201c IOCTL call.

Affected products

• Dell Pre-Boot Authentication Driver: version 1.0.1.5 only

Published 2016-01-08. Last modified 2026-06-17.