The Directorate of Information Systems Security has alerted users to critical vulnerabilities in older versions of Mozilla Firefox that could let hackers remotely execute commands and steal sensitive data, including passwords.
The flaws affect Firefox versions before 138, Firefox ESR before 115.23, and Thunderbird before 128.10. Both institutions and individuals are urged to check Mozilla’s official bulletin and install the latest updates without delay.
Mozilla confirmed these gaps allow attackers to run malicious code, access private files, and escalate their privileges to seize full system control.
Automatic updates usually provide the fix, but manual updates may be necessary to ensure protection.
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