Is CVE-2020-11539 actively exploited?

No active exploitation of CVE-2020-11539 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-11539 be exploited remotely?

Partially. CVE-2020-11539 requires adjacent network access (same network segment) to exploit.

What is the CVSS score of CVE-2020-11539?

CVE-2020-11539 has a CVSS score of 8.1 (HIGH).

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HIGH

CVE-2020-11539

CWE-306Published: April 22, 2020· Updated: Jun 17, 2026

8.1

CVSS v3.1

Official Description

An issue was discovered on Tata Sonata Smart SF Rush 1.12 devices. It has been identified that the smart band has no pairing (mode 0 Bluetooth LE security level) The data being transmitted over the air is not encrypted. Adding to this, the data being sent to the smart band doesn't have any authentication or signature verification. Thus, any attacker can control a parameter of the device.

NVD Source

Technical Analysis

CVE-2020-11539 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

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), with a CVSS base score of 8.1.