What is CVE-2021-29415?

CVE-2021-29415 is a medium-severity vulnerability in Nordicsemi Nrf52840, classified under Observable Discrepancy. CVSS score: 5.5/10. Published 2021-05-21.

How severe is CVE-2021-29415?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Nordicsemi Nrf52840

CVE-2021-29415

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.

EPSS: 0.003 (19.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

CWE-203 — Observable Discrepancy

References

cve@mitre.org (x_refsource_MISC, Not Applicable)
cve@mitre.org (Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-29415?: CVE-2021-29415 is a medium-severity vulnerability in Nordicsemi Nrf52840, classified under Observable Discrepancy. CVSS score: 5.5/10. Published 2021-05-21.
How severe is CVE-2021-29415?: Medium severity. CVSS v3 base score is 5.5 out of 10.