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

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact High

Subsequent System Integrity Impact High

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Silicon Labs SiSDK unaffected
Version Status Constraints
0 affected ≤ 2025.12.1

No data.

No data.

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/SiliconLabsSoftware/sisdk-release cve-icon
https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/069Vm00000kDYsfIAG?operationContext=S1 cve-icon
History

Thu, 25 Jun 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 25 Jun 2026 14:00:00 +0000

Type Values Removed Values Added
Description Incorrect use of the PUF key for user key generation in EFR32xG27 results in predictable keys
Title Incorrect use of the PUF key for user key generation in EFR32xG27 results in predictable keys
Weaknesses CWE-339
References
Metrics cvssV4_0

{'score': 8.4, '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Silabs

Published:

Updated: 2026-06-25T14:03:49.129Z

Reserved: 2026-02-19T16:49:32.148Z

Link: CVE-2026-2815

cve-icon Vulnrichment

Updated: 2026-06-25T14:03:44.190Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-25T15:30:16Z

Weaknesses