CVE-2020-11539

Name: CVE-2020-11539
Creator: NVD / NIST
Published: 2020-04-22T14:15:12.347+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 1.03%

Last modified Jun 17, 2026

CVE-2020-11539 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. 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. EPSS estimates a 1.03% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.1/10

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS Probability

1.03%

59.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Titan	Sf Rush Smart Band Firmware	1.12

References

https://github.com/the-girl-who-lived/CVE-2020-11539/Exploit, Third Party Advisory
https://medium.com/%40sayliambure/hacking-a-5-smartband-824763ab6e8f
https://github.com/the-girl-who-lived/CVE-2020-11539/Exploit, Third Party Advisory
https://medium.com/%40sayliambure/hacking-a-5-smartband-824763ab6e8f

Timeline

Published: Apr 22, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-11539?

How severe is CVE-2020-11539?

CVE-2020-11539 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 1.03% probability of exploitation in the next 30 days.

How do I fix CVE-2020-11539?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-11539?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST