Description
The Bluetooth Low Energy implementation in Cypress PSoC 4 BLE component 3.61 and earlier processes data channel frames with a payload length larger than the configured link layer maximum RX payload size, which allows attackers (in radio range) to cause a denial of service (crash) via a crafted BLE Link Layer frame.
References (4)
Core 4
Core References
Vendor Advisory x_refsource_misc
https://community.cypress.com/thread/48573
Exploit, Third Party Advisory x_refsource_misc
https://asset-group.github.io/disclosures/sweyntooth/
Exploit, Third Party Advisory x_refsource_misc
https://www.youtube.com/watch?v=Iw8sIBLWE_w
Vendor Advisory x_refsource_misc
https://community.cypress.com/thread/53680
Scores
CVSS v3
6.5
EPSS
0.0026
EPSS Percentile
49.1%
Attack Vector
ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-120
Status
published
Products (2)
cypress/cybl11573
< 3.61
cypress/cyble-416045
< 2.10
Published
Feb 12, 2020
Tracked Since
Feb 18, 2026