CVE-2026-3290: CWE-332 in Silicon Labs RS9116 SDK
Timing limitations of the HRNG in RS9116 when power save mode is enabled results in predictable values
AI Analysis
Technical Summary
The RS9116 SDK from Silicon Labs contains a vulnerability (CVE-2026-3290) related to CWE-332, where the hardware random number generator produces predictable values due to timing limitations when power save mode is active. This predictability undermines cryptographic operations relying on the HRNG, potentially compromising security features that depend on strong randomness. The vulnerability is rated high severity with a CVSS 4.0 score of 7.4. No patch or official remediation has been published, and the product is not a cloud service.
Potential Impact
The vulnerability impacts the randomness quality of the HRNG in the RS9116 SDK under power save mode, potentially allowing attackers to predict random values. This can weaken cryptographic protections relying on the HRNG, increasing the risk of cryptographic attacks or bypasses. There are no known exploits in the wild, and the impact is limited to systems using the affected SDK version with power save mode enabled.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or mitigation is currently available, users should monitor Silicon Labs advisories for updates. Avoid enabling power save mode on affected devices if possible until a fix is released.
CVE-2026-3290: CWE-332 in Silicon Labs RS9116 SDK
Description
Timing limitations of the HRNG in RS9116 when power save mode is enabled results in predictable values
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The RS9116 SDK from Silicon Labs contains a vulnerability (CVE-2026-3290) related to CWE-332, where the hardware random number generator produces predictable values due to timing limitations when power save mode is active. This predictability undermines cryptographic operations relying on the HRNG, potentially compromising security features that depend on strong randomness. The vulnerability is rated high severity with a CVSS 4.0 score of 7.4. No patch or official remediation has been published, and the product is not a cloud service.
Potential Impact
The vulnerability impacts the randomness quality of the HRNG in the RS9116 SDK under power save mode, potentially allowing attackers to predict random values. This can weaken cryptographic protections relying on the HRNG, increasing the risk of cryptographic attacks or bypasses. There are no known exploits in the wild, and the impact is limited to systems using the affected SDK version with power save mode enabled.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or mitigation is currently available, users should monitor Silicon Labs advisories for updates. Avoid enabling power save mode on affected devices if possible until a fix is released.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Silabs
- Date Reserved
- 2026-02-26T17:36:36.836Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a062489ec166c07b00b4bcc
Added to database: 5/14/2026, 7:37:45 PM
Last enriched: 5/14/2026, 7:53:19 PM
Last updated: 5/15/2026, 6:10:41 AM
Views: 3
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