Vulnerability in Zh-Jieli Ac6901
CVE-2021-31611
The Bluetooth Classic implementation on Zhuhai Jieli AC690X and AC692X devices does not properly handle an out-of-order LMP Setup procedure that is followed by a malformed LMP packet, allowing attackers in radio range to deadlock a device via a crafted LMP packet. The user needs to manually reboot the device to restore communication.
EPSS: 0.004 (29.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_MISC, Broken Link)
Frequently asked questions
- What is CVE-2021-31611?
- CVE-2021-31611 is a medium-severity vulnerability in Zh-Jieli Ac6901, classified under Improper Locking. CVSS score: 5.7/10. Published 2021-09-07.
- How severe is CVE-2021-31611?
- Medium severity. CVSS v3 base score is 5.7 out of 10.
- Is CVE-2021-31611 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.