Is CVE-2020-35757 actively exploited?

No active exploitation of CVE-2020-35757 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-35757 be exploited remotely?

Yes. CVE-2020-35757 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2020-35757?

CVE-2020-35757 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2020-35757

CWE-306Published: May 3, 2021· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

An issue was discovered on Libre Wireless LS9 LS1.5/p7040 devices. There is Unauthenticated Root ADB Access Over TCP. The LS9 web interface provides functionality to access ADB over TCP. This is not enabled by default, but can be enabled by sending a crafted request to a web management interface endpoint. Requests made to this endpoint do not require authentication. As such, any unauthenticated user who is able to access the web interface will be able to gain root privileges on the LS9 module.

NVD Source

Technical Analysis

CVE-2020-35757 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 complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.