PatchTheCVECVE-2021-31610: The Bluetooth Classic implementation on AB32VG1 devices does not properly handle the reception of continuous u
CVE-2021-31610 is a medium-severity flaw (CVSS 6.5) affecting mi true wireless earbuds basic 2 firmware, ab5376t firmware, bt8896a firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The Bluetooth Classic implementation on AB32VG1 devices does not properly handle the reception of continuous unsolicited LMP responses, allowing attackers in radio range to trigger a denial of service (either restart or deadlock the device) by flooding a device with LMP_AU_rand data.
Why this priority
- No elevated risk signals yet
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 6.5 (Medium) |
| Attack vector | Adjacent network |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.6% (top 53%) |
| CISA exploited list | No |
| Published | 2021-09-07 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-31610?
mi true wireless earbuds basic 2 firmware: mitigate or apply the listed mitigation; ab5376t firmware: mitigate or apply the listed mitigation; bt8896a firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2021-31610 being exploited?
CVE-2021-31610 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-31610 affect?
CVE-2021-31610 affects mi true wireless earbuds basic 2 firmware, ab5376t firmware, bt8896a firmware. Severity is medium (CVSS 6.5). The Bluetooth Classic implementation on AB32VG1 devices does not properly handle the reception of continuous unsolicited LMP responses, allowing attackers in radio range to trigger a denial of service (either restart or deadlock the device)
How urgent is CVE-2021-31610?
Priority 34/100. No elevated risk signals yet.