CVE-2020-12406
8.8
HIGH
CVSS 3.1
EPSS 0.25%
Description
Mozilla Developer Iain Ireland discovered a missing type check during unboxed objects removal, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 68.9.0, Firefox < 77, and Firefox ESR < 68.9.
How to fix CVE-2020-12406
To remediate CVE-2020-12406, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 68.9.0esr-1 or later
- —upgrade to 1:68.9.0-1 or later
Is CVE-2020-12406 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 68.9.0esr-1
- from 0, < 1:68.9.0-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |