Description
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.
Published: 2025-11-11
Score: 8.2 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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History

Thu, 13 Nov 2025 09:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 12 Nov 2025 13:00:00 +0000

Type Values Removed Values Added
First Time appeared Zephyrproject-rtos
Zephyrproject-rtos zephyr
Vendors & Products Zephyrproject-rtos
Zephyrproject-rtos zephyr

Tue, 11 Nov 2025 15:45:00 +0000

Type Values Removed Values Added
Description 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.
Title Userspace privilege escalation vulnerability on Cortex M
Weaknesses CWE-270
References
Metrics cvssV3_1

{'score': 8.2, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H'}


Subscriptions

Zephyrproject-rtos Zephyr
cve-icon MITRE

Status: PUBLISHED

Assigner: zephyr

Published:

Updated: 2025-11-12T20:02:52.616Z

Reserved: 2025-08-25T06:44:35.788Z

Link: CVE-2025-9408

cve-icon Vulnrichment

Updated: 2025-11-12T14:54:07.390Z

cve-icon NVD

Status : Deferred

Published: 2025-11-11T16:15:40.917

Modified: 2026-04-15T00:35:42.020

Link: CVE-2025-9408

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-11-12T12:42:28Z

Weaknesses