Mozilla Releases Security Updates for Firefox and Firefox ESR (05th February 2021)

Ref# ADV2021_17 | Date: Feb 9th 2021

Mozilla has published security advisories, highlighting vulnerabilities in Firefox and Firefox ESR on 05th February 2021. It is recommended that you take the necessary precautions by ensuring your products are always updated. 

  • Firefox 85.01 

  • Firefox ESR  78.7.1 

For more information on these Mozilla updates, you can follow the URL: 

The Guyana National CIRT recommends that users and administrators review these updates and apply them where necessary. 

PDF Download: Mozilla Releases Security Updates.pdf


  • Mozilla releases security updates (05th, February 2021). Retrieved from Mozilla Security 


  • Mozilla releases security updates for Firefox and Firefox ESR (08th, February 2021). Retrieved from Cybersecurity & Infrastructure Security Agency (CISA)