CVE-2020-12401

MediumCVSS 4.7/10Last modified Aug 19, 2026

Description

During ECDSA signature generation, padding applied in the nonce designed to ensure constant-time scalar multiplication was removed, resulting in variable-time execution dependent on secret data. This vulnerability affects Firefox < 80 and Firefox for Android < 80.

Metrics

CVSS 3.1 4.7/10CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-203

Affected software

No affected versions have been published.

Timeline

Published
Oct 8, 2020
Last modified
Aug 19, 2026
NVD status
Modified

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CVE-2020-12401: Medium severity, CVSS 4.7 | Vulnix