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PatchSiren cyber security CVE debrief

CVE-2026-2815 Silicon Labs CVE debrief

The CVE-2026-2815 vulnerability involves the incorrect use of the PUF key for user key generation in EFR32xG27, leading to predictable keys. This issue has a CVSS score of 8.4 and is classified as HIGH severity. The CVE was published on 2026-06-25T14:16:37.067Z and last modified on 2026-10-25T23:10:00.167Z. Defenders responsible for EFR32xG27 devices should assess the potential for predictable key generation and verify system configurations for secure key generation. Verification of PUF key usage in EFR32xG27 devices is required to prevent predictable key generation.

Vendor
Silicon Labs
Product
SiSDK
CVSS
HIGH 8.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-25
Original CVE updated
2026-10-25
Advisory published
2026-06-25
Advisory updated
2026-10-25

Who should care

Defenders responsible for EFR32xG27 devices should assess the potential for predictable key generation and verify system configurations for secure key generation.

Why it matters

The CVE-2026-2815 vulnerability involves the incorrect use of the PUF key for user key generation in EFR32xG27, leading to predictable keys. Defenders responsible for EFR32xG27 devices should assess the potential for predictable key generation and verify system configurations for secure key generation.

  • Verification of PUF key usage in EFR32xG27 devices is required to prevent predictable key generation.
  • Defenders should assess system configurations to ensure secure key generation.

Technical summary

The CVE-2026-2815 vulnerability involves the incorrect use of the PUF key for user key generation in EFR32xG27, leading to predictable keys. This issue has a CVSS score of 8.4 and is classified as HIGH severity. The vulnerability affects EFR32xG27 devices, and defenders should prioritize verifying the use of PUF keys and assess the potential for predictable key generation. The CVE record and NVD detail page provide information on the vulnerability, but additional verification is required to determine the full scope of affected systems and remediation steps.

Defensive priority

Defenders should prioritize verifying the use of PUF keys in EFR32xG27 devices and assess the potential for predictable key generation.

Recommended defensive actions

  • Verify the use of PUF keys in EFR32xG27 devices
  • Assess the potential for predictable key generation
  • Review system configurations for secure key generation

Evidence notes

The CVE record and NVD detail page provide information on the vulnerability, but additional verification is required to determine the full scope of affected systems and remediation steps.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-2815 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-2815

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-2815 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-2815

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.