Userspace privilege escalation vulnerability on Cortex M (zephyrproject-rtos Zephyr)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.12 % · percentile 2 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- zephyr
- NVD status
- Deferred
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.
Weaknesses (CWE)
- CWE-270 — Privilege Context Switching Error
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.2 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H | zephyr |
| CVSS 3.1 | HIGH 8.1 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H | NVD · vulnerabilities@zephyrproject.org (Secondary) |
European references
- ENISA EUVD · EUVD-2025-84338
- GCVE · GCVE-0-2025-9408
Affected products
| Product | Versions |
|---|---|
| zephyrproject-rtos · Zephyr | affected * < 3.7.2 ; affected 4.0.0 < 4.2.2 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |