What’s Vulnerable › Vulnerabilities

CVE-2021-28155

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-09-07 · updated 2026-06-17

Description

The Bluetooth Classic implementation on JBL TUNE500BT devices does not properly handle the reception of continuous unsolicited LMP responses, allowing attackers in radio range to trigger a denial of service and shutdown a device by flooding the target device with LMP Feature Response data.

Affected products

• JBL Tune500Bt Firmware: all versions

References

• https://dl.packetstormsecurity.net/papers/general/braktooth.pdf
• https://www.jbl.com.sg/over-ear-headphones/JBL+TUNE500BT.html
• https://dl.packetstormsecurity.net/papers/general/braktooth.pdf
• https://www.jbl.com.sg/over-ear-headphones/JBL+TUNE500BT.html

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