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

8.2HIGH

Key Information:

Status
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.

Affected Version(s)

Zephyr * <= 4.2

References

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

.