CVE-2020-12401EPSS p23.1%

CVE-2020-12401CVE-2020-12401

mozilla / firefox

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.

Scoring

CVSS 4.7 ()
VectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS0.32% probability of exploitation · percentile 23.1% · 2026-10-05T12:00:23Z
Last modified2026-08-19
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.