CVE-2019-14236

Name: CVE-2019-14236
Creator: NVD / NIST
Published: 2019-09-12T18:15:11.927+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.26%

Last modified Jun 17, 2026

CVE-2019-14236 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 2.26% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.26%

80.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-863

Affected Software

Vendor	Product	Versions
St	Stm32l0 Firmware	All versions
St	Stm32l1 Firmware	All versions
St	Stm32f4 Firmware	All versions
St	Stm32l4 Firmware	All versions
St	Stm32f7 Firmware	All versions
St	Stm32h7 Firmware	All versions

References

https://www.usenix.org/system/files/woot19-paper_schink.pdfExploit, Mitigation, Third Party Advisory
https://www.usenix.org/system/files/woot19-paper_schink.pdfExploit, Mitigation, Third Party Advisory

Timeline

Published: Sep 12, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-14236?

How severe is CVE-2019-14236?

CVE-2019-14236 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.26% probability of exploitation in the next 30 days.

How do I fix CVE-2019-14236?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-14236?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST