What is CVE-2019-14237?

CVE-2019-14237 is a critical-severity vulnerability in Nxp Kinetis K8x, classified under Incorrect Authorization. CVSS score: 9.8/10. Published 2019-09-12.

How severe is CVE-2019-14237?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Nxp Kinetis K8x

CVE-2019-14237

On NXP Kinetis KV1x, Kinetis KV3x, and Kinetis K8x devices, Flash Access Controls (FAC) (a software IP protection method for execute-only access) can be defeated by observing CPU registers and the effect of code/instruction execution.

Vulnerability class: Broken Access Control

Published 2019-09-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.029 (86.5th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.029 · newest: 0.029 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

www.usenix.org/system/files/woot19-paper_schink.pdf (Exploit, Third Party Advisory, Mitigation)

Frequently asked questions

What is CVE-2019-14237?: CVE-2019-14237 is a critical-severity vulnerability in Nxp Kinetis K8x, classified under Incorrect Authorization. CVSS score: 9.8/10. Published 2019-09-12.
How severe is CVE-2019-14237?: Critical severity. CVSS v3 base score is 9.8 out of 10.