CVE-2021-29414

Name: CVE-2021-29414
Creator: NVD / NIST
Published: 2021-05-21T12:15:07.923+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.33%

Last modified Jun 17, 2026

CVE-2021-29414 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. STMicroelectronics STM32L4 devices through 2021-03-29 have incorrect physical access control.. EPSS estimates a 0.33% chance of exploitation in the next 30 days.

Description

STMicroelectronics STM32L4 devices through 2021-03-29 have incorrect physical access control.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

0.33%

25.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-74

Affected Software

Vendor	Product	Versions
St	Stm32cubel4 Firmware	<= 1.17.0

References

https://eprint.iacr.org/2021/640Third Party Advisory
https://www.aisec.fraunhofer.de/de/das-institut/wissenschaftliche-exzellenz/security-and-trust-in-open-source-security-tokens.htmlThird Party Advisory
https://www.sit.fraunhofer.de/en/news-events/downloads-services/cve/Not Applicable
https://eprint.iacr.org/2021/640Third Party Advisory
https://www.aisec.fraunhofer.de/de/das-institut/wissenschaftliche-exzellenz/security-and-trust-in-open-source-security-tokens.htmlThird Party Advisory
https://www.sit.fraunhofer.de/en/news-events/downloads-services/cve/Not Applicable

Timeline

Published: May 21, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-29414?

STMicroelectronics STM32L4 devices through 2021-03-29 have incorrect physical access control.

How severe is CVE-2021-29414?

CVE-2021-29414 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.33% probability of exploitation in the next 30 days.

How do I fix CVE-2021-29414?

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-2021-29414?

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

Scan your code now

Source: NVD / NIST