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

Quick assessment

Affected
Silicon Labs RS9116 SDK
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Silicon Labs RS9116 SDK是美国Silicon Labs公司的一套面向无线连接模组的嵌入式开发工具包。 Silicon Labs RS9116 SDK存在安全漏洞，该漏洞源于启用省电模式时HRNG的时间限制导致可预测值。

AI Predicted 5.9 Difficulty: Moderate EPSS 0.16% · P6

Possible ATT&CK Techniques 1 AI

T1552.005 · Cloud Instance Metadata API

Affected Version Matrix 1

VendorProduct Version RangeStatus
Silicon Labs RS9116 SDK ≤ 2.13.1 affected
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I. Basic Information for CVE-2026-3290

Vulnerability Information
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Vulnerability Title
Timing limitations of the HRNG in RS9116 when power save mode is enabled results in predictable values
Source: CVE Program / CVE List V5
Vulnerability Description
Timing limitations of the HRNG in RS9116 when power save mode is enabled results in predictable values
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
PRNG中信息熵不充分
Source: CVE Program / CVE List V5
Vulnerability Title
Silicon Labs RS9116 SDK 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Silicon Labs RS9116 SDK是美国Silicon Labs公司的一套面向无线连接模组的嵌入式开发工具包。 Silicon Labs RS9116 SDK存在安全漏洞，该漏洞源于启用省电模式时HRNG的时间限制导致可预测值。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Silicon Labs RS9116 SDK 0 ~ 2.13.1 -

II. Public POCs for CVE-2026-3290

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III. Intelligence Information for CVE-2026-3290

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Vendor Pages for CVE-2026-3290 (1)

Other References for CVE-2026-3290 (1)

IV. Related Vulnerabilities

Same vendor: Silicon Labs
Same weakness: CWE-332

V. Comments for CVE-2026-3290

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