What is CVE-2019-14236?

CVE-2019-14236 is a critical-severity vulnerability in St Stm32f4, classified under Incorrect Authorization. CVSS score: 9.8/10. Published 2019-09-12.

How severe is CVE-2019-14236?

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

Auth bypass in St Stm32f4

CVE-2019-14236

On STMicroelectronics STM32L0, STM32L1, STM32L4, STM32F4, STM32F7, and STM32H7 devices, Proprietary Code Read Out Protection (PCROP) (a software IP protection method) 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: 0.023 (82.3th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · 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-2019-14236?: CVE-2019-14236 is a critical-severity vulnerability in St Stm32f4, classified under Incorrect Authorization. CVSS score: 9.8/10. Published 2019-09-12.
How severe is CVE-2019-14236?: Critical severity. CVSS v3 base score is 9.8 out of 10.