Mozilla security advisory (AV25-819)
ID: 035fb897-135c-526a-a572-9aa0c9b770a6
STIX ID: report--035fb897-135c-526a-a572-9aa0c9b770a6
Feed Name: Canadian Centre for Cyber Security Alerts and Advisories
Threat Score
**Mozilla advisory (Dec 9, 2025):** Security updates released for Firefox (versions prior to 146), Firefox ESR (versions prior to 115.31 and 140.6), and Thunderbird (versions prior to 146 and 140.6). The Cyber Centre urges users and administrators to review the links provided by Mozilla and apply the necessary updates.
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