CVE-2016-5258
8.8
HIGH
CVSS 3.1
EPSS 1.1%
Description
Use-after-free vulnerability in the WebRTC socket thread in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows remote attackers to execute arbitrary code by leveraging incorrect free operations on DTLS objects during the shutdown of a WebRTC session.
How to fix CVE-2016-5258
To remediate CVE-2016-5258, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 45.3.0esr-1 or later
Is CVE-2016-5258 being exploited?
Low — EPSS is 1.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 45.3.0esr-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |