CVE-2021-31610

Name: CVE-2021-31610
Creator: NVD / NIST
Published: 2021-09-07T07:15:06.99+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.54%

Last modified Jun 17, 2026

CVE-2021-31610 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. The Bluetooth Classic implementation on AB32VG1 devices does not properly handle the reception of continuous unsolicited LMP responses, allowing attackers in radio range to trigger a denial of service (either restart or deadlock the device) by flooding a device with LMP_AU_rand data.. EPSS estimates a 0.54% chance of exploitation in the next 30 days.

Description

The Bluetooth Classic implementation on AB32VG1 devices does not properly handle the reception of continuous unsolicited LMP responses, allowing attackers in radio range to trigger a denial of service (either restart or deadlock the device) by flooding a device with LMP_AU_rand data.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.54%

41.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Mi	Mi True Wireless Earbuds Basic 2 Firmware	All versions
Bluetrum	Ab5376t Firmware	All versions
Bluetrum	Bt8896a Firmware	All versions

References

http://www.bluetrum.com/product/ab5376t.htmlProduct, Vendor Advisory
http://www.bluetrum.com/product/bt8896a.htmlProduct, Vendor Advisory
https://dl.packetstormsecurity.net/papers/general/braktooth.pdfBroken Link
https://www.mi.com/global/mi-true-wireless-earbuds-basic-2/Not Applicable
http://www.bluetrum.com/product/ab5376t.htmlProduct, Vendor Advisory
http://www.bluetrum.com/product/bt8896a.htmlProduct, Vendor Advisory
https://dl.packetstormsecurity.net/papers/general/braktooth.pdfBroken Link
https://www.mi.com/global/mi-true-wireless-earbuds-basic-2/Not Applicable

Timeline

Published: Sep 7, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-31610?

How severe is CVE-2021-31610?

CVE-2021-31610 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.54% probability of exploitation in the next 30 days.

How do I fix CVE-2021-31610?

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-2021-31610?

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

Scan your code now

Source: NVD / NIST