Mozilla is warning Firefox users to update their browsers to the latest version to avoid facing disruption and security risks caused by the upcoming expiration of one of the company’s root certificates. […] Users need to update their browsers to Firefox 128 (released in July 2024) or later and ESR 115.13 or later for ‘Extended Support Release’ (ESR) users.
Updated the post with details. While I’m not entirely familiar with the matter, this does seem to affect versions below 128 and 115.13 ESR.