Unrated severityNVD Advisory· Published Sep 14, 2026

CVE-2026-84523

Description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. An app may be able to cause unexpected system termination or write kernel memory.

Affected products

Apple Inc./iOSllm-fuzzy
Range: 26.7, 27
Apple Inc./Ipadosllm-fuzzy
Range: 26.7, 27
Apple Inc./macOSllm-fuzzy
Range: Golden Gate 27, 15.8, 26.7
Apple Inc./tvOSllm-fuzzy
Range: 27
Apple Inc./Visionosllm-fuzzy
Range: 27
Apple Inc./watchOSllm-fuzzy
Range: 27

Patches

Vulnerability mechanics

References

support.apple.com/en-us/149034nvd
support.apple.com/en-us/149035nvd
support.apple.com/en-us/149036nvd
support.apple.com/en-us/149037nvd
support.apple.com/en-us/149038nvd
support.apple.com/en-us/149041nvd
support.apple.com/en-us/149042nvd
support.apple.com/en-us/149043nvd

News mentions

Apple Updates Everything, (Mon, Sep 14th)
SANS Internet Storm Center · Sep 14, 2026

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