What is CVE-2017-5626?

CVE-2017-5626 is a critical-severity vulnerability in Oneplus 3. CVSS score: 9.8/10. Published 2017-03-12.

How severe is CVE-2017-5626?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2017-5626 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Oneplus 3

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 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.

Published 2017-03-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.028 (86.0th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.028 · newest: 0.028 · change: 0.000

Affected products

Public proof-of-concept exploits

References

securityresear.ch/2017/02/08/oneplus3-bootloader-vulns/ (Technical Description, Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2017-5626?: CVE-2017-5626 is a critical-severity vulnerability in Oneplus 3. CVSS score: 9.8/10. Published 2017-03-12.
How severe is CVE-2017-5626?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2017-5626 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.