CVE-2021-34150: n/a vulnerability

CVE-2021-34150: The Bluetooth Classic implementation on Bluetrum AB5301A devices with unknown firmware versions does not pr...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 4, 2024, 00:05 UTC (UTC+00:00)

Security readout for executives and security teams

This flaw can make Bluetrum AB5301A Bluetooth devices stop accepting new Bluetooth connections after receiving malformed nearby radio traffic. Recovery requires manually restarting the device. Business impact is localized disruption, not data theft, based on the provided sources. Exposure is limited to devices using Bluetrum AB5301A Bluetooth Classic implementations. The source bundle does not identify downstream product names, firmware ranges, or CPEs, so asset correlation may require hardware BOM review. Treat this as a targeted availability risk for Bluetooth-dependent devices. Escalate only where affected devices support critical workflows, because evidence does not show remote internet exposure, data compromise, or active exploitation. Mitigation focus: Identify products containing Bluetrum AB5301A Bluetooth chipsets.; Check Bluetrum or device-vendor advisories for firmware guidance.; Prioritize devices where Bluetooth availability affects operations or safety..

Prepared: Jun 2, 2026, 18:39 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Sep 7, 2021, 05:59 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://dl.packetstormsecurity.net/papers/general/braktooth.pdfCVE reference · x_refsource_MISC

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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