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 escalation for malicious userspace processes.

Score

CVSS 3.1 8.2 High

Status

Deferred - vulnerabilities@zephyrproject.org

Published

2025-11-11

Last modified

2026-10-18

Weaknesses

CWE-270

Affected products

• Zephyr (Zephyrproject-rtos)

References

• https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-3r6j-5mp3-75wr