CVE-2021-40327EPSS p64.0%

CVE-2021-40327CVE-2021-40327

trustedfirmware / trusted_firmware-m

Description

Trusted Firmware-M (TF-M) 1.4.0, when Profile Small is used, has incorrect access control. NSPE can access a secure key (held by the Crypto service) based solely on knowledge of its key ID. For example, there is no authorization check associated with the relationship between a caller and a key owner.

Scoring

CVSS 5.9 ()
VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS1.19% probability of exploitation · percentile 64.0% · 2026-06-19T12:03:05Z
Last modified2026-06-05

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.