InfoSecBulletin Cybersecurity for mankind
Apple released an urgent security update, iOS 15.8.7 and iPadOS 15.8.7, to safeguard older devices from the serious ‘Coruna’ exploit kit threat. On March 11, 2026, a critical patch was released that brings fixes from newer iOS versions to protect users of older devices from cyberattacks.
The Coruna exploit kit targets Apple devices by exploiting several vulnerabilities in both the operating system (Kernel) and the WebKit browser engine.
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Attackers can take full control of an affected iPhone or iPad simply by tricking the user into visiting a malicious website.
Apple fixed certain vulnerabilities in iOS 16 and iOS 17 from July 2023 to January 2024. Nonetheless, hackers are currently exploiting these outdated issues using the Coruna kit. Users with older Apple devices should install this software update right away to stay protected.
Affected devices are iPhone 6s, iPhone 7, iPhone SE (1st gen), iPad Air 2, iPad mini (4th gen), and iPod touch (7th gen).
The iOS 15.8.7 update fixes four important security issues related to the Coruna exploit kit’s attack chain:
Kernel Vulnerability (CVE-2023-41974): Discovered by researcher Félix Poulin-Bélanger, this is a use-after-free memory issue in the device’s Kernel.
WebKit Memory Corruption (CVE-2023-43010): Another severe WebKit issue triggered by malicious web content, which also leads to memory corruption. Apple addressed this flaw by improving its overall memory-handling protocols.
Users of older devices should immediately update to iOS 15.8.7 or iPadOS 15.8.7 to protect against known vulnerabilities.
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