Cyber Resilience

CVE-2025-9408

High

Published: 11 November 2025

Published
11 November 2025
Modified
15 April 2026
KEV Added
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Patch
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CVSS Score v3.1 8.1 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS Score 0.0001 3.5th percentile
Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-9408 is a high-severity Privilege Context Switching Error (CWE-270) vulnerability. Its CVSS base score is 8.1 (High).

Operationally, ranked at the 3.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

System call entry on Cortex M (and possibly R and A, but I think not) has a race which allows very practical privilege escalation for malicious userspace processes.

CWE(s)
CWE-270

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References