Microsoft has published a security advisory, highlighting vulnerabilities in multiple products on 13th July, 2021. It is recommended that you take the necessary precautions by ensuring your products are always updated.
For more information on these Microsoft updates you can follow this URL:
https://msrc.microsoft.com/update-guide/en-us
The Guyana National CIRT recommends that users and administrators review these updates and apply them where necessary.
PDF Download: Microsoft Releases Security Updates for Multiple Products.pdf
References
https://cyber.gc.ca/en/alerts/microsoft-security-advisory-july-2021-month ly-rollup