CVE-2020-27212

HighCVSS 7.0/10Last modified Jun 17, 2026

Description

STMicroelectronics STM32L4 devices through 2020-10-19 have incorrect access control. The flash read-out protection (RDP) can be degraded from RDP level 2 (no access via debug interface) to level 1 (limited access via debug interface) by injecting a fault during the boot phase.

Metrics

CVSS 3.1 7.0/10CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-74

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

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.aisec.fraunhofer.de/en/FirmwareProtection.htmlThird Party Advisory
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.aisec.fraunhofer.de/en/FirmwareProtection.htmlThird Party Advisory

Timeline

Published: May 21, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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