CVE-2021-29415
MEDIUMnordicsemi nRF52840_firmware < 2021-03-29 - ECDSA Private Key Recovery via Non-Constant Time Implementation
Title source: llmDescription
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.
References (3)
Core 3
Core References
Not Applicable x_refsource_misc
https://www.sit.fraunhofer.de/en/news-events/downloads-services/cve/
Third Party Advisory x_refsource_misc
https://eprint.iacr.org/2021/640
Third Party Advisory x_refsource_misc
https://www.aisec.fraunhofer.de/de/das-institut/wissenschaftliche-exzellenz/security-and-trust-in-open-source-security-tokens.html
Scores
CVSS v3
5.5
EPSS
0.0027
EPSS Percentile
18.9%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Details
CWE
CWE-203
Status
published
Products (1)
nordicsemi/nrf52840_firmware
< 2021-03-29
Published
May 21, 2021
Tracked Since
Feb 18, 2026