Mozilla security advisory (AV26-924)

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        <div><p><strong>Serial Number:</strong> AV26-924<br /><strong>Date:</strong> September 15, 2026</p>

As of September 15, 2026, Mozilla is affected by vulnerabilities in the following products:

  • Firefox ESR
    • Versions prior to 115.41
    • Versions prior to 140.16
    • Versions prior to 153.3
  • Firefox
    • Versions prior to 156

The Cyber Centre encourages users and administrators to review the provided web links and apply any necessary updates as they become available.

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Article Link: Mozilla security advisory (AV26-924) - Canadian Centre for Cyber Security