HOMEVULNERABILITIESCVE-2021-34150
MEDIUM

CVE-2021-34150

NVD-CWE-noinfoPublished: September 7, 2021· Updated: Jun 17, 2026

6.5
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2021-34150 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 6.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorAdjacent
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

bluetrum2 product(s)
ab5301a firmwareab5301a
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://www.bluetrum.com/product/ab5301a.html
ADVISORYhttps://dl.packetstormsecurity.net/papers/general/braktooth.pdf
ADVISORYhttp://www.bluetrum.com/product/ab5301a.html
ADVISORYhttps://dl.packetstormsecurity.net/papers/general/braktooth.pdf

All References (4)

→
http://www.bluetrum.com/product/ab5301a.htmlProduct · Vendor Advisory
→
https://dl.packetstormsecurity.net/papers/general/braktooth.pdfTechnical Description · Third Party Advisory
→
http://www.bluetrum.com/product/ab5301a.htmlProduct · Vendor Advisory
→
https://dl.packetstormsecurity.net/papers/general/braktooth.pdfTechnical Description · Third Party Advisory

Quick Facts

CVE IDCVE-2021-34150
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessNVD-CWE-noinfo
CISA KEVNo
Affected1 vendor(s)
PublishedSep 7, 2021

Related CVEs (NVD-CWE-noinfo)

CVE-2003-1525
10.0
CVE-2003-1551
10.0
CVE-2003-1333
10.0
CVE-2003-1361
10.0
CVE-2013-6218
10.0
CVE-2009-3353
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-34150 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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