CVE-2021-34150

MEDIUM
6.5
CVSS Score
Published: September 7, 2021 at 05:59 AM UTC
Updated: June 17, 2026 at 03:55 AM UTC
2 products affected across 1 vendorAB5301A FirmwareAb5301A

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.4%

Description

The Bluetooth Classic implementation on Bluetrum AB5301A devices with unknown firmware versions does not properly handle the reception of oversized DM1 LMP packets while no other BT connections are active, allowing attackers in radio range to prevent new BT connections (disabling the AB5301A inquiry and page scan procedures) via a crafted LMP packet. The user needs to manually perform a power cycle (restart) of the device to restore BT connectivity.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions
bluetrum-ab5301a (same device)
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

x_refsource_MISCProductVendor Advisory
http://www.bluetrum.com/product/ab5301a.html
x_refsource_MISCTechnical DescriptionThird Party Advisory
https://dl.packetstormsecurity.net/papers/general/braktooth.pdf

CVSS

Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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