VULNERABILITY INTELLIGENCE

CVE-2021-29415

CVSS score5.5 MEDIUM
EPSS probability0.27%
CISA KEVNot currently listed
Published2021-05-21
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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.

Weakness classification

  • nvd@nist.gov: CWE-203

Primary references