CVE-2017-5396
9.8
CRITICAL
CVSS 3.1
EPSS 2.2%
Description
A use-after-free vulnerability in the Media Decoder when working with media files when some events are fired after the media elements are freed from memory. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.
How to fix CVE-2017-5396
To remediate CVE-2017-5396, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 45.7.0esr-1 or later
Is CVE-2017-5396 being exploited?
Low — EPSS is 2.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 45.7.0esr-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |