Ref# ADV2026_166 | Date: Mar 19th 2026

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Apple published a security advisory highlighting vulnerabilities in the following product on March 17^th, 2026. It is recommended that you take the necessary precautions by ensuring your products are always updated.

• iOS – versions prior to 26.3.1
• iPadOS – versions prior to 26.3.1
• macOS – versions prior to 26.3.1
• macOS – versions prior to 26.3.2

For more information on this update, you can follow this URL:

https://www.cyber.gc.ca/en/alerts-advisories/apple-security-advisory-av26-248

The Guyana National CIRT recommends that users and administrators review this update and apply it where necessary.

PDF Download: Apple_Security_Advisory

References

• Apple Security advisories. (March 18^th, 2026). Retrieved from Canadian Centre for Cyber Security
  https://www.cyber.gc.ca/en/alerts-advisories/apple-security-advisory-av26-248
• About the security content of Background Security Improvements for iOS 26.3.1, iPadOS 26.3.1, macOS 26.3.1, and macOS 26.3.2 – Apple Support. (2026, March 17). Apple Support. https://support.apple.com/en-us/126604
• Apple security releases – Apple Support. (2026, March 17). Apple Support. https://support.apple.com/en-us/100100