How severe is CVE-2017-5626?

CVE-2017-5626 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-5626 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-5626?

CVE-2017-5626 affects Oneplus Oxygenos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-5626?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2017-5626 published?

CVE-2017-5626 was published on 2017-03-12 and last updated on 2026-06-17.

CVE-2017-5626

CVE-2017-5626 is a critical-severity vulnerability in Oneplus Oxygenos with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Oneplus Oxygenos
Published: 2017-03-12
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2017-5626?: CVE-2017-5626 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-5626 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-5626?: CVE-2017-5626 affects Oneplus Oxygenos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-5626?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2017-5626 published?: CVE-2017-5626 was published on 2017-03-12 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:o:oneplus:oxygenos:*:*:*:*:*:*:*:*

More vulnerabilities in Oneplus Oxygenos

CVE-2017-5624 — Critical (CVSS 9.8): An issue was discovered in OxygenOS before 4.0.3 for OnePlus 3 and 3T. The attacker can persistently make the (locked)…
CVE-2017-5554 — High (CVSS 8.1): An issue was discovered in ABOOT in OnePlus 3 and 3T OxygenOS before 4.0.2. The attacker can reboot the device into the…
CVE-2016-10370 — High (CVSS 7.5): An issue was discovered on OnePlus devices such as the 3T. The OnePlus OTA Updater pushes the signed-OTA image over…
CVE-2017-5947 — Medium (CVSS 6.8): An issue was discovered in OnePlus One, X, 2, 3, 3T, and 5 devices with OxygenOS 5.0 and earlier. The attacker can…
CVE-2017-5623 — Medium (CVSS 6.6): An issue was discovered in OxygenOS before 4.1.0 on OnePlus 3 and 3T devices. The attacker can change the bootmode of…
CVE-2017-8851 — Medium (CVSS 5.9): An issue was discovered on OnePlus One and X devices. Due to a lenient updater-script on the OnePlus One and X OTA…

All CVEs affecting Oneplus Oxygenos →