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/HT210589
https://support.apple.com/en-us/HT210589
https://support.apple.com/en-us/HT210590
https://support.apple.com/en-us/HT210624
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/2019/09/27/apple-releases-security-updates