CVE-2025-44557HIGH 8.1EPSS p16.7%

CVE-2025-44557CVE-2025-44557

Description

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.

Scoring

CVSS 3.18.1 (HIGH)
VectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS0.26% probability of exploitation · percentile 16.7% · 2026-06-19T12:03:05Z
Published2025-06-27
Last modified2026-04-15

Underlying weaknesses· 1

CWE-303

References

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

1

TypeTargetConfidenceTier
WeaknessIncorrect Implementation of Authentication Algorithmcwe-3030%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.