What is CVE-2021-34144?

CVE-2021-34144 is a medium-severity vulnerability in Zh-Jieli Ac6936. CVSS score: 6.5/10. Published 2021-09-07.

How severe is CVE-2021-34144?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2021-34144 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Zh-Jieli Ac6936

CVE-2021-34144

The Bluetooth Classic implementation in the Zhuhai Jieli AC6366C BT SDK through 0.9.1 does not properly handle the reception of truncated LMP_SCO_Link_Request 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.

EPSS: 0.007 (49.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Public proof-of-concept exploits

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Technical Description, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-34144?: CVE-2021-34144 is a medium-severity vulnerability in Zh-Jieli Ac6936. CVSS score: 6.5/10. Published 2021-09-07.
How severe is CVE-2021-34144?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2021-34144 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.