What is CVE-2026-10667?

CVE-2026-10667 is a high-severity vulnerability in Zephyrproject Zephyr, classified under Use After Free. CVSS score: 7.8/10. Published 2026-07-12.

How severe is CVE-2026-10667?

High severity. CVSS v3 base score is 7.8 out of 10.

Use After Free in Zephyrproject Zephyr

CVE-2026-10667

Zephyr's dynamic kernel-object tracking (kernel/userspace/userspace.c, formerly kernel/userspace.c) maintains a doubly-linked list (obj_list) of dynamically allocated kernel objects. Iteration over this list in k_object_wordlist_foreach()…

Vulnerability class: Use-After-Free

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Zephyrproject Zephyr — versions 1.14.0

Weakness classification (CWE)

CWE-416 — Use After Free

References

vulnerabilities@zephyrproject.org (patch)
vulnerabilities@zephyrproject.org

Frequently asked questions

What is CVE-2026-10667?: CVE-2026-10667 is a high-severity vulnerability in Zephyrproject Zephyr, classified under Use After Free. CVSS score: 7.8/10. Published 2026-07-12.
How severe is CVE-2026-10667?: High severity. CVSS v3 base score is 7.8 out of 10.