Mozilla Urges Firefox Users to Update Before Root Certificate Expiration This Friday

Failure to update to Firefox 128 or ESR 115.13+ could lead to disabled add-ons, broken DRM playback, and increased security risks.

A key Mozilla root certificate, used for verifying signed content and add-ons, will expire on March 14, 2025, impacting older Firefox versions.
Users on Firefox versions earlier than 128 or ESR 115.13 may face issues such as disabled add-ons, DRM media playback failures, and security vulnerabilities.
Mozilla warns that outdated browsers could expose users to risks such as malicious add-ons, fraudulent websites, and compromised password alerts no longer functioning.
The update affects Firefox on Windows, macOS, Linux, and Android, but not iOS due to its independent certificate management system.
Firefox-based browsers like Tor, Waterfox, and LibreWolf are also advised to update to versions based on Firefox 128 or newer to avoid disruptions.