VULNERABILITY INTELLIGENCE

CVE-2023-4489

CVSS score6.4 MEDIUM
EPSS probability0.53%
CISA KEVNot currently listed
Published2023-12-14
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

The first S0 encryption key is generated with an uninitialized PRNG in Z/IP Gateway products running Silicon Labs Z/IP Gateway SDK v7.18.3 and earlier. This makes the first S0 key generated at startup predictable, potentially allowing network key prediction and unauthorized S0 network access.

Weakness classification

  • product-security@silabs.com: CWE-1279
  • nvd@nist.gov: CWE-908

Primary references