Z/IP Gateway Use of Uninitialized PRNG when Generating S0 Encryption Key
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.4epss 0.5%
exploitation probability
0.5%top 58% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
silabs.com · Z/IP Gateway SDK