CVE-2020-12397
4.3
MEDIUM
CVSS 3.1
EPSS 0.19%
Description
By encoding Unicode whitespace characters within the From email header, an attacker can spoof the sender email address that Thunderbird displays. This vulnerability affects Thunderbird < 68.8.0.
How to fix CVE-2020-12397
To remediate CVE-2020-12397, upgrade the affected package to a fixed version below.
- Debian/thunderbird—upgrade to 1:68.8.0-1 or later
Is CVE-2020-12397 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1:68.8.0-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N |