CVE-2020-12401

low-risk
Published 2020-10-08

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.

Do I need to act?

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0.19% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.7/10 Medium
LOCAL / HIGH complexity

Affected Products (2)

Affected Vendors

20
/ 100
low-risk
Severity 12/34 · Low
Exploitability 1/34 · Minimal
Exposure 7/34 · Low