Apple Security Advisory (27th October 2021)

Ref# ADV2021_194 | Date: Oct 27th 2021

Apple has published a security advisory, highlighting vulnerabilities in multiple versions listed below on the 25th of October 2021. It is recommended that you take the necessary precautions by ensuring your products are always updated.

  • macOS Monterey versions prior to 12.0.1

  • macOS Big Sur versions prior to 11.6.1

  • macOS Catalina versions prior to Security Update 2021-007

  • watchOS versions prior to 8.1

  • iOS versions prior to 15.1

  • iPadOS versions prior to 15.1

  • tvOS versions prior to 15.1

For more information on these Apple updates, you can follow this URL:

The Guyana National CIRT recommends that users and administrators review these updates and apply them where necessary.
PDF Download: Apple Security Advisory.pdf


Apple security advisory (25th October 2021). Retrieved from Apple.

Apple security advisory (26th October 2021). Retrieved from Canadian Centre for Cyber Security.