Medium severity6.4NVD Advisory· Published Dec 14, 2023· Updated Jun 17, 2026
CVE-2023-4489
CVE-2023-4489
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.
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Affected products
4<=7.18.3+ 1 more
- (no CPE)range: <=7.18.3
- (no CPE)range: 0
- Range: <=7.18.3
Patches
Vulnerability mechanics
References
1- siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/0698Y00000buWj0QAEnvdPermissions Required
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