CVE-2016-2821
7.5
HIGH
CVSS 3.1
EPSS 2.8%
Description
Use-after-free vulnerability in the mozilla::dom::Element class in Mozilla Firefox before 47.0 and Firefox ESR 45.x before 45.2, when contenteditable mode is enabled, allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) by triggering deletion of DOM elements that were created in the editor.
How to fix CVE-2016-2821
To remediate CVE-2016-2821, upgrade the affected package to a fixed version below.
- —upgrade to 45.2.0esr-1 or later
Is CVE-2016-2821 being exploited?
Low — EPSS is 2.8%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 45.2.0esr-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |