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TI-2020-09619 Aliases CVE-2020-11957GHSA-5q94-jxwq-fqfx

The Bluetooth Low Energy implementation in Cypress PSoC Creator BLE 4.2 component…

Priority LOW 33CWE-331Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.00394 33rd percentileScored 2026-11-08
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:cypress:psoc_4.2_ble:*:*:*:*:*:*:*:*before 3.64VulnerableCypress
  • cpe:2.3:a:cypress:psoc_4.2_ble:*:*:*:*:*:*:*:* Versions before 3.64 Vulnerable ·Cypress

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-11957
  2. 2026-10-03 Alias added: GHSA-5q94-jxwq-fqfx

References

Advisory 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences