CVE-2020-11957: cypress psoc 4.2 ble

csirt@kutim:~/threat-intel/cve/CVE-2020-11957

CVSS 7.5 · High EPSS 0,39%

Kerentanan Insufficient Entropy pada cypress psoc 4.2 ble. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

The Bluetooth Low Energy implementation in Cypress PSoC Creator BLE 4.2 component versions before 3.64 generates a random number (Pairing Random) with significantly less entropy than the specified 128 bits during BLE pairing. This is the case for both authenticated and unauthenticated pairing with both LE Secure Connections as well as LE Legacy Pairing. A predictable or brute-forceable random number allows an attacker (in radio range) to perform a MITM attack during BLE pairing.

Rincian

Terbit di NVD: 9 Juni 2020
Terakhir diubah: 17 Juni 2026
Status NVD: Modified
CVSS 3.1: 7.5 (High), sumber NVD
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-331: Insufficient Entropy
EPSS (30 hari): 0,39% peluang dieksploitasi; lebih tinggi dari 31,6% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
cypress	psoc 4.2 ble	Semua versi sebelum 3.64

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://www.cypress.com/file/504466/download product · advisory vendor

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:10 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.