What is CVE-2026-12233?

CVE-2026-12233 is a medium-severity vulnerability in Zephyrproject Zephyr, classified under Improper Initialization. CVSS score: 5.9/10. Published 2026-08-12.

How severe is CVE-2026-12233?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Vulnerability in Zephyrproject Zephyr

CVE-2026-12233

The PSA Protected Storage credential backend (subsys/net/lib/tls_credentials/tls_credentials_trusted.c) declared its credential-store mutex as a plain zero-filled static struct k_mutex credential_lock; and never called k_mutex_init() on it…

Vulnerability class: Dirty Pipe (CVE-2022-0847)

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Zephyrproject Zephyr — versions 3.2.0

Weakness classification (CWE)

CWE-665 — Improper Initialization

References

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

Frequently asked questions

What is CVE-2026-12233?: CVE-2026-12233 is a medium-severity vulnerability in Zephyrproject Zephyr, classified under Improper Initialization. CVSS score: 5.9/10. Published 2026-08-12.
How severe is CVE-2026-12233?: Medium severity. CVSS v3 base score is 5.9 out of 10.