Home/CVE/System call entry on Cortex M (and possibly R and A, but I think not) has a race which allows very practical privilege e
CVE

CVE-2025-9408

System call entry on Cortex M (and possibly R and A, but I think not) has a race which allows very practical privilege e

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.

HIGH · CVSS 8.1 EPSS 0.00014
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-270Privilege Context Switching Error
▣

Scoring & Timeline

8.1
HIGH · CVSS v3.1 · vulnerabilities@zephyrproject.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD11 Nov 2025 · 04:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-3r6j-5mp3-75wr
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