Privilege Escalation Vulnerability in Zephyr RTOS by Zephyr Project
CVE-2025-9408

8.2HIGH

Key Information:

Vendor

Zephyrproject-rtos

Status
Zephyr
Vendor
CVE Published:
11 November 2025

What is CVE-2025-9408?

This vulnerability arises from a race condition during system call entry on Cortex M processors, which potentially allows malicious userspace processes to escalate their privileges. Exploiting this weakness can lead to unauthorized access to system resources, thus enhancing the attack surface for bad actors.

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Deploy the Patch

Affected Version(s)

Zephyr * <= 4.2

References

https://github.com/zephyrproject-rtos/zephyr/security/adv...

CVSS V3.1

Score:
8.2
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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