Rapid7

vulnerability

MFSA2017-09 Thunderbird: Security vulnerabilities fixed in - Thunderbird 52 (CVE-2017-5426)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:N)
Published
Apr 5, 2017
Added
Apr 11, 2017
Modified
Mar 27, 2026

Description

On Linux, if the secure computing mode BPF (seccomp-bpf) filter is running when the Gecko Media Plugin sandbox is started, the sandbox fails to be applied and items that would run within the sandbox are run protected only by the running filter which is typically weak compared to the sandbox. Note: this issue only affects Linux. Other operating systems are not affected. This vulnerability affects Firefox < 52 and Thunderbird < 52.

Solution

mozilla-thunderbird-upgrade-52_0
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.