What’s Vulnerable › Vulnerabilities

CVE-2026-3290: Timing limitations of the HRNG in RS9116 when power save mode is enabled results in predictable values

• Severity: high (CVSS 7.4 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-14 · updated 2026-10-26
• Weakness: CWE-332

Description

Timing limitations of the HRNG in RS9116 when power save mode is enabled results in predictable values

Affected products

• Silicon Labs RS9116 SDK: through 2.13.1

References

• https://github.com/SiliconLabs/wiseconnect-wifi-bt-sdk/
• https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/069Vm00000nIg6IIAS?operationContext=S1

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