CVE-2020-11539

mediumpriority · track · 42OT risk · elevatedEPSS 0.010 · 64 %ileexploit · PoCEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

1.04% (64th) EPSS

CVSS 4.8 · medium

Is it mine?

2 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-26

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.

cvss

Technical severity, 0–10. One row per scoring source.

8.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.8–8.1

v2.04.8mediumAV:A/AC:L/Au:N/C:P/I:P/A:Nprimary · NVD / NIST USexploitability 6.5 · impact 4.9

v3.18.1highCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 5.2

v3.17.7highCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:Psecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-306USprimaryCWE-319USprimaryCWE-347USprimary

exploits (1)

Public proof-of-concept and weaponised exploit code.

the-girl-who-lived/CVE-2020-11539Improper Access Control in Tata Sonata SmartbandPoC · poc_in_github

affected products (2)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
titan sf rush smart band firmware= 1.12nvdUScpe:2.3:o:titan:sf_rush_smart_band_firmware:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2020-04-22modified 2026-06-17

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references (7)

External citations — patches, advisories, analysis.

scry

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