Description
Apple has released updates to address vulnerabilities affecting multiple products. It is recommended that you take the necessary precautions by ensuring your products are always updated.
https://support.apple.com/en-us/HT210796
https://support.apple.com/kb/HT210791
https://support.apple.com/kb/HT210789
https://support.apple.com/kb/HT210790
https://support.apple.com/kb/HT210788
https://support.apple.com/kb/HT210792
https://support.apple.com/kb/HT210787
https://support.apple.com/kb/HT210785
https://support.apple.com/en-us/HT210793
https://support.apple.com/en-us/HT210795
The Guyana National CIRT recommends users and administration to follow these guidelines and to apply them where necessary.
Reference
Apple release Security Updates (US-Cert)
https://www.us-cert.gov/ncas/current-activity/2019/12/10/apple-releases-multiple-security-updates