CVE-2019-17061

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-02-10 · updated 2026-06-17
Weakness: CWE-120

Description

The Bluetooth Low Energy (BLE) stack implementation on Cypress PSoC 4 through 3.62 devices does not properly restrict the BLE Link Layer header and executes certain memory contents upon receiving a packet with a Link Layer ID (LLID) equal to zero. This allows attackers within radio range to cause deadlocks, cause anomalous behavior in the BLE state machine, or trigger a buffer overflow via a crafted BLE Link Layer frame.

Affected products

Cypress Psoc 4 Ble: through 3.62

References

https://asset-group.github.io/disclosures/sweyntooth/
https://community.cypress.com/thread/53680
https://www.cypress.com/products/ble-bluetooth
https://asset-group.github.io/disclosures/sweyntooth/
https://community.cypress.com/thread/53680
https://www.cypress.com/products/ble-bluetooth

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