Integer Overflow Vulnerability in Apple's Operating Systems
CVE-2026-64766

Currently unrated

Key Information:

Vendor: Apple
Status: iOS And iPad OS; Mac OS; TV OS; Visionos
Vendor: CVE Published:; 27 July 2026

What is CVE-2026-64766?

An integer overflow vulnerability has been identified affecting multiple Apple operating systems. This vulnerability arises from insufficient input validation, which may allow a maliciously crafted file to cause unexpected termination of applications or potentially lead to arbitrary code execution. Apple has addressed this issue in recent updates, urging users to upgrade to the latest versions of iOS, iPadOS, macOS, tvOS, visionOS, and watchOS to mitigate the risk.

Affected Version(s)

iOS and iPadOS 0 < 26.6

macOS 0 < 14.8.8

macOS 0 < 15.7.8

References

https://support.apple.com/en-us/128066

https://support.apple.com/en-us/128067

https://support.apple.com/en-us/128068

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Timeline

Vulnerability published
Jul 27, 2026
Vulnerability Reserved
Jul 20, 2026

CVE-2026-64766 Data

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