Apple has issued security updates to address a zero-day vulnerability known as CVE-2026-20700. This flaw, an arbitrary code execution vulnerability in dyld (the Dynamic Link Editor), affects several Apple operating systems, including iOS, iPadOS, macOS, tvOS, watchOS, and visionOS. The vulnerability has been linked to highly sophisticated attacks targeting specific individuals, with Apple confirming that it may have been exploited in conjunction with two other flaws fixed in December 2025, CVE-2025-14174 and CVE-2025-43529. The affected devices include iPhone 11 and newer, various iPad models from the third generation onward, and Mac devices running macOS Tahoe. Apple fixed the vulnerability in recent updates: iOS 18.7.5, iPadOS 18.7.5, macOS Tahoe 26.3, tvOS 26.3, watchOS 26.3, and visionOS 26.3. While details on the attack's specifics remain limited, Google’s Threat Analysis Group discovered the vulnerability. Users are strongly advised to install the latest updates to safeguard their devices, especially since this is the first zero-day vulnerability Apple has fixed in 2026, following a total of seven in 2025.