CVE-2021-31787 json
The Bluetooth Classic implementation on Actions ATS2815 chipsets does not properly handle the reception of continuous unsolicited LMP respo…
published 2021-11-30 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-18668
- cvss
- 6.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 43%
- public exploits
- 0
- none known
Summary
The Bluetooth Classic implementation on Actions ATS2815 chipsets does not properly handle the reception of continuous unsolicited LMP responses, allowing attackers in radio range to trigger a denial of service and shutdown of a device by flooding the target device with LMP_features_res packets.
Exploit prediction
0.51% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 6.1 | AV:A/AC:L/Au:N/C:N/I:N/A:C |
Classification
- Weakness
-
- CWE-770 Allocation of Resources Without Limits or Throttling
References
-
actions-semi.com
/index.php?id=3581&siteId=4
vendor-advisory
-
launchstudio.bluetooth.com
/ListingDetails/76427
third-party-advisory
-
dl.packetstormsecurity.net
/papers/general/braktooth.pdf
broken-link
Sources
- CVE List CVE-2021-31787
- NVD CVE-2021-31787
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.