Medium severity5.5NVD Advisory· Published May 21, 2021· Updated Jun 17, 2026
CVE-2021-29415
CVE-2021-29415
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.
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Affected products
3- ARM TrustZone/CryptoCell 310description
- Range: <=2021-03-29
- Range: <=2021-03-29
Patches
Vulnerability mechanics
References
3- eprint.iacr.org/2021/640nvdThird Party Advisory
- www.aisec.fraunhofer.de/de/das-institut/wissenschaftliche-exzellenz/security-and-trust-in-open-source-security-tokens.htmlnvdThird Party Advisory
- www.sit.fraunhofer.de/en/news-events/downloads-services/cve/nvdNot Applicable
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