Mozilla published a security advisory highlighting vulnerabilities in the following products on the 20th of May 2022. It is recommended that you take the necessary precautions by ensuring your products are always updated.
Firefox versions prior to 100.0.2
Firefox ESR versions prior to 91.9.1
Firefox for Android versions prior to 100.3
For more information on these updates, you can follow this URL:
https://www.mozilla.org/en-US/security/advisories/mfsa2022-19/
The Guyana National CIRT recommends that users and administrators review these updates and apply them where necessary.
PDF Download: Mozilla Security Advisory.pdf
References
Mozilla Security Advisory (20th May 2022). Retrieved from Canadian Centre for Cyber Security.
https://cyber.gc.ca/en/alerts/mozilla-security-advisory-av22-282
Mozilla Foundation Security Advisory (20th May 2022). Retrieved from Mozilla.
https://www.mozilla.org/en-US/security/advisories/mfsa2022-19/