CVE-2020-26978
6.1
MEDIUM
CVSS 3.1
EPSS 0.42%
Description
Using techniques that built on the slipstream research, a malicious webpage could have exposed both an internal network's hosts as well as services running on the user's local machine. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.
How to fix CVE-2020-26978
To remediate CVE-2020-26978, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 78.6.0esr-1 or later
- —upgrade to 1:78.6.0-1 or later
Is CVE-2020-26978 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 78.6.0esr-1
- from 0, < 1:78.6.0-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |