What is CVE-2026-12051?

CVE-2026-12051 is a medium-severity vulnerability in Zephyrproject Zephyr, classified under NULL Pointer Dereference. CVSS score: 4.6/10. Published 2026-08-11.

How severe is CVE-2026-12051?

Medium severity. CVSS v3 base score is 4.6 out of 10.

NULL pointer dereference in Zephyrproject Zephyr

CVE-2026-12051

The USB DFU class implementation in Zephyr's new (experimental) device_next USB device stack contains a NULL pointer dereference in handle_download() (subsys/usb/device_next/class/usbd_dfu.c). The handler computes MIN(setup->wLength, buf->…

CVSS v3 metric

CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Zephyrproject Zephyr — versions 4.4.0

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

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

Frequently asked questions

What is CVE-2026-12051?: CVE-2026-12051 is a medium-severity vulnerability in Zephyrproject Zephyr, classified under NULL Pointer Dereference. CVSS score: 4.6/10. Published 2026-08-11.
How severe is CVE-2026-12051?: Medium severity. CVSS v3 base score is 4.6 out of 10.