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/HT210637
https://support.apple.com/en-us/HT210636
https://support.apple.com/en-us/HT210635
https://support.apple.com/en-us/HT210634
The Guyana National CIRT recommends users and administration to review these updates and to apply them where necessary.
Reference
Apple release Security Updates (US-Cert)
https://www.us-cert.gov/ncas/current-activity/2019/10/08/apple-releases-security-updates