CVE-2021-31609 json
The Bluetooth Classic implementation in Silicon Labs iWRAP 6.3.0 and earlier does not properly handle the reception of an oversized LMP pac…
published 5y ago modified 4mo ago also EUVD-2021-18498
- cvss
- 6.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 35%
- public exploits
- 0
- none known
Summary
The Bluetooth Classic implementation in Silicon Labs iWRAP 6.3.0 and earlier does not properly handle the reception of an oversized LMP packet greater than 17 bytes, allowing attackers in radio range to trigger a crash in WT32i via a crafted LMP packet.
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0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-09).
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 | 3.3 | AV:A/AC:L/Au:N/C:N/I:N/A:P |
References
-
silabs.com
/wireless/bluetooth/bluegiga-classic-legacy-modules/device.wt32i-a
product, vendor-advisory
-
dl.packetstormsecurity.net
/papers/general/braktooth.pdf
technical-description, third-party-advisory
Sources
- CVE List CVE-2021-31609
- NVD CVE-2021-31609
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