6.4
Medium
CVE-2023-4489 The first S0 encryption key is generated with an uninitialized PRNG in Z/IP Gateway products running Silicon Labs Z/IP…
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Z/IP Gateway SDK 7.18 | earliest → 7.18.3 | No fix stated |