VULNERABILITY INTELLIGENCE

CVE-2021-29415

CVSS score5.5 MEDIUM

EPSS probability0.27%

CISA KEVNot currently listed

Published2021-05-21

Last modified2026-06-17

Description

The elliptic curve cryptography (ECC) hardware accelerator, part of the ARM® TrustZone® CryptoCell 310, contained in the NordicSemiconductor nRF52840 through 2021-03-29 has a non-constant time ECDSA implemenation. This allows an adversary to recover the private ECC key used during an ECDSA operation…