CVE-2025-44557

8.1 highEPSS 0.3%

High (8.1). EPSS 0.3% chance of exploitation in the next 30 days.

A state machine transition flaw in the Bluetooth Low Energy (BLE) stack of Cypress PSoC4 v3.66 allows attackers to bypass the pairing process and authentication via a crafted pairing_failed packet.

Severity

CVSS 3.1

8.1 high

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 20% of CVEs (scores of 2026-10-31)
CWE: CWE-303
Published: 2025-06-27
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

References

https://github.com/yangting111/BLE_TEST/blob/main/result/PoC/Cypress/Auth_bypass.md
https://www.infineon.com/cms/en/design-support/tools/sdk/psoc-software/psoc-4-components/psoc-creator-component-datasheet-bluetooth-low-energy-ble/

Check your stack JSON