CVE-2020-12399

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CVSS 3.1

4.4 medium

EPSS

<1%p49

Published

Jul 9, 2020 (Jul 9, 2020)

Modified

Jun 17, 2026

Description

NSS has shown timing differences when performing DSA signatures, which was exploitable and could eventually leak private keys. This vulnerability affects Thunderbird < 68.9.0, Firefox < 77, and Firefox ESR < 68.9.

Vendors: mozilla debian
Products: firefox, firefox esr, thunderbird, debian linux
Weakness: CWE-203
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N

NVD CVE.org GitHub PoCs EPSS (0.7%)

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