Rapid7

vulnerability

Ubuntu: USN-3111-1 (CVE-2016-5287): Firefox vulnerabilities

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
Oct 26, 2016
Added
Oct 27, 2016
Modified
Mar 27, 2026

Description

A potentially exploitable use-after-free crash during actor destruction with service workers. This issue does not affect releases earlier than Firefox 49. This vulnerability affects Firefox < 49.0.2.

Solution

ubuntu-upgrade-firefox
Title
Rapid7 Labs

2026 Global Threat Landscape Report

The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.