Mozilla Firefox 51.0.1 and Thunderbird 45.7 Land in All Supported Ubuntu OSes

If you've been waiting to install the recently released Mozilla Firefox 51.0 web browser on your Linux-based operating system, today we have some good news for you, especially if you're using the popular Ubuntu.

Canonical today released both Mozilla Firefox 51.0.1 and Thunderbird 45.7.0 to the stable channels of the Ubuntu 12.04 LTS (Precise Pangolin), Ubuntu 14.04 LTS (Trusty Tahr), Ubuntu 16.04 LTS (Xenial Xerus), and Ubuntu 16.10 (Yakkety Yak), allowing users to enjoy the latest new features and security improvements that landed in these updates.

Yes, you're reading that right, Mozilla Firefox 51.0 already received its first minor security update, versioned 51.0....

nmap -sV --script vuln -p- <target-network>

tail -f /var/log/suricata/fast.log | grep <cve>

Check Vendor Security Advisory Bulletin

title: Detect Exploitation - Mozilla Firefox 51.0.1 and Thunderbird 45.7 Land in All Supported Ubuntu OSes
id: 703a31aa-fd32-4a48-a723-7f1e291eeb11
status: experimental
description: Automatisch generierte SIEM-Erkennungsregel basierend auf CTI Intelligence
references:
  - https://tsecurity.de/
author: iShareStuff CTI Automated Detection Engine
date: 2026-09-24
logsource:
  category: network_connection
  product: any
detection:
  selection:
      CommandLine|contains:
        - 'exploit'
  condition: selection
falsepositives:
  - Legitime administrative Zugriffe oder Penetrationstests
level: high
tags:
  - attack.initial_access

rule CTI_Threat_Indicator {
    meta:
        author = "iShareStuff CTI Automated Detection Engine"
        date = "2026-09-24"
        description = "YARA Signature for "
    strings:
        $str = "Mozilla Firefox 51.0.1 and Thu" ascii wide
    condition:
        any of them
}