Vulnerability in St Stm32cubel4 Firmware
CVE-2020-27212
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (25.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 25.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.aisec.fraunhofer.de/en/FirmwareProtection.html (Third Party Advisory)
- eprint.iacr.org/2021/640 (Third Party Advisory)
- www.aisec.fraunhofer.de/de/das-institut/wissenschaftliche-exzellenz/security-an… (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-27212?
- CVE-2020-27212 is a high-severity vulnerability in St Stm32cubel4 Firmware, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.0/10. Published 2021-05-21.
- How severe is CVE-2020-27212?
- High severity. CVSS v3 base score is 7.0 out of 10.