Ref# ADV2026_208 | Date: Apr 3rd 2026

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Apple published a security advisory highlighting vulnerabilities in the following products on March 24, 2026. It is recommended that you take the necessary precautions by ensuring your products are always updated.

• iOS – versions prior to 18.7.7 and versions prior to 26.4
• iPadOS – versions prior to 18.7.7 and versions prior to 26.4
• macOS Sequoia – versions prior to 15.7.5
• macOS Sonoma – versions prior to 14.8.5
• macOS Tahoe – versions prior to 26.4
• tvOS – versions prior to 26.4
• visionOS – versions prior to 26.4
• watchOS – versions prior to 26.4

Update 1

On April 1, 2026 Apple expanded the availability  of iOS 18.7.7 for more devices to protect from DarkSword iOS exploit kit web attacks.

For more information on these updates, you can follow these URLs:

• About the security content of iOS 18.7.7 and iPadOS 18.7.7
• Apple Security Updates

The Guyana National CIRT recommends that users and administrators review these updates and apply them where necessary.

PDF Download: Apple Security Advisory- Update 1

References

• Apple Security Advisory (March 24th, 2026). Retrieved from Apple. https://support.apple.com/en-us/126793
• Apple Security Advisory. (April 2nd, 2026). Retrieved from Canadian Centre for Cyber Security. https://www.cyber.gc.ca/en/alerts-advisories/apple-security-advisory-av26-275