Mozilla security advisory (AV25-674)

Serial number: AV25-674
Date: October 16, 2025

On October 14, 2025, Mozilla published security advisories to address vulnerabilities in the following products:

  • Firefox - versions prior to 144
  • Firefox ESR – versions prior to 115.29
  • Firefox ESR – versions prior to 140.4
  • Thunderbird – versions prior to 144
  • Thunderbird – versions prior to 140.4

The Cyber Centre encourages users and administrators to review the provided web links and apply the necessary updates.

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