CVE-2025-67841 Nordic Semiconductor CVE debrief

Who should care

Defenders responsible for systems using Nordic Semiconductor IronSide SE for nRF54H20 should assess exposure and prioritize verification and remediation efforts.

Why it matters

CVE-2025-67841 is a high-severity vulnerability in Nordic Semiconductor IronSide SE for nRF54H20, requiring verification of affected systems and prioritization of remediation efforts.

• Verification of affected systems is required to prevent potential exploitation
• Remediation efforts should be prioritized based on vendor guidance
• Monitoring for potential exploitation attempts is necessary

Technical summary

The vulnerability is classified as an algorithmic complexity issue in Nordic Semiconductor IronSide SE for nRF54H20 before version 23.0.2+17. The CVSS score is 7.5, indicating high severity. The issue requires verification of affected systems and review of vendor remediation guidance. Further analysis is necessary to understand the impact and verify affected systems. The vulnerability has significant implications for defenders, who should prioritize verification and remediation efforts.

Defensive priority

Defenders should prioritize verification of affected systems and review vendor remediation guidance.

Recommended defensive actions

• Verify affected systems using inventory checks
• Review vendor remediation guidance
• Monitor for potential exploitation attempts

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability. Further analysis is required to understand the impact and verify affected systems.

Sources and 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.