CVE-2026-2815

Incorrect use of the PUF key for user key generation in EFR32xG27 results in predictable keys

State: Published
Severity: 8.4 High
Published: Jun 25, 2026
Updated: Jun 25, 2026
Reserved: Feb 19, 2026

Description

Incorrect use of the PUF key for user key generation in EFR32xG27 results in predictable keys

Scores

CVSS	Score	Vector	Source
4.0	8.4 High	CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N	Silabs

Weaknesses

CWE-339 Small seed space in PRNG

Affected Products

Product	Versions
SiSDKSilicon Labs	2025.12.1 and earlierAffected

References

https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/069Vm00000kDYsfIAG?operationContext=S1vendor-advisorypermissions-required
https://github.com/SiliconLabsSoftware/sisdk-releasepatch

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