Microsoft has published security updates, highlighting a vulnerability in multiple products on the 14th of December 2021. It is recommended that you take the necessary precautions by ensuring your products are always updated.
For more information on this update, you can follow this URL:
https://msrc.microsoft.com/update-guide/
The Guyana National CIRT recommends that users and administrators review this update and apply it where necessary.
PDF Download: Microsoft Security updates.pdf
References
Microsoft security advisory (14th December 2021). Retrieved from Microsoft.
Microsoft security advisory (14th December 2021). Retrieved from Cybersecurity & Infrastructure Security Agency.