CVE-2020-15669
8.8
HIGH
CVSS 3.1
EPSS 0.45%
Description
When aborting an operation, such as a fetch, an abort signal may be deleted while alerting the objects to be notified. This results in a use-after-free and we presume that with enough effort it could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 68.12 and Thunderbird < 68.12.
How to fix CVE-2020-15669
To remediate CVE-2020-15669, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 68.12.0esr-1 or later
- —upgrade to 1:68.12.0-1 or later
Is CVE-2020-15669 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 68.12.0esr-1
- from 0, < 1:68.12.0-1
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 |