CVE-2026-2815 PUBLISHED

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

Assigner: Silabs
Reserved: 19.02.2026 Published: 25.06.2026 Updated: 25.06.2026

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

CVSS Vector: 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
CVSS Score: 8.4

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Adjacent	Confidentiality	High	Confidentiality	High
Attack Complexity	Low	Integrity	None	Integrity	High
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Vendor	Silicon Labs
Product	SiSDK
Versions	Default: unaffected affected from 0 to 2025.12.1 (incl.)