Is CVE-2017-8851 actively exploited?

No active exploitation of CVE-2017-8851 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2017-8851 be exploited remotely?

Yes. CVE-2017-8851 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2017-8851?

CVE-2017-8851 has a CVSS score of 5.9 (MEDIUM).

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MEDIUM

CVE-2017-8851

CWE-319Published: May 11, 2017· Updated: Jun 17, 2026

5.9

CVSS v3.1

Official Description

An issue was discovered on OnePlus One and X devices. Due to a lenient updater-script on the OnePlus One and X OTA images, the fact that both products use the same OTA verification keys, and the fact that both products share the same 'ro.build.product' system property, attackers can install OTAs of one product over the other, even on locked bootloaders. That could theoretically allow for exploitation of vulnerabilities patched on one image but not on the other, in addition to expansion of the attack surface. Moreover, the vulnerability may result in having the device unusable until a Factory Reset is performed. This vulnerability can be exploited by Man-in-the-Middle (MiTM) attackers targeting the update process. This is possible because the update transaction does not occur over TLS (CVE-2016-10370). In addition, physical attackers can reboot the phone into recovery, and then use 'adb sideload' to push the OTA.

NVD Source

Technical Analysis

CVE-2017-8851 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 5.9.