What’s Vulnerable › Vulnerabilities

CVE-2026-2815: Incorrect use of the PUF key for user key generation in EFR32xG27 results in predictable keys

• Severity: high (CVSS 8.4 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-25 · updated 2026-10-25
• Weakness: CWE-339

Description

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

Affected products

• silabs.com SiSDK: through 2025.12.1

References

• https://github.com/SiliconLabsSoftware/sisdk-release
• https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/069Vm00000kDYsfIAG?operationContext=S1

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