CVE-2025-44557

Status: DeferredHigh (8.1)—

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.

CVSS

Version: 3.1
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Base score: 8.1

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.28%
Percentile among all scored CVEs: 19
Score date: 10/5/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1210 Exploitation of Remote Serviceslateral movement75 %
Primary impactT1078 Valid Accountsstealth · persistence · privilege escalation · initial access70 %
Secondary impactT1005 Data from Local Systemcollection60 %

AV:A (red adyacente) sin privilegios previos indica T1210. Bypassing pairing/authentication permite asumir identidad (T1078) y acceder a datos BLE (T1005), citando 'bypass the pairing process and authentication' y CWE-303 (Auth by Obscurity).

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Privileged Account Management Application Developer Guidance Active Directory Configuration Vulnerability Scanning User Training User Account Management

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Cypress — Psoc4^AI

CWEs

CWE-303

References

Raw JSON (NVD)

Show

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  "published": "2025-06-27T17:15:33.040",
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    {
      "url": "https://www.infineon.com/cms/en/design-support/tools/sdk/psoc-software/psoc-4-components/psoc-creator-component-datasheet-bluetooth-low-energy-ble/",
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      "value": "Una falla de transición de máquina de estados en la pila Bluetooth Low Energy (BLE) de Cypress PSoC4 v3.66 permite a los atacantes eludir el proceso de emparejamiento y autenticación a través de un paquete pairing_failed manipulado."
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  "lastModified": "2026-06-17T09:25:04.967",
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