Apple macOS up to 14.8.7/15.7.7/26.5 integer overflow

Summaryinfo

A vulnerability was found in Apple macOS up to 14.8.7/15.7.7/26.5. It has been declared as problematic. This issue affects some unknown processing. Executing a manipulation can lead to integer overflow. This vulnerability is tracked as CVE-2026-43764. The attack is restricted to local execution. No exploit exists.

Detailsinfo

A vulnerability classified as problematic was found in Apple macOS up to 14.8.7/15.7.7/26.5. This vulnerability affects some unknown processing. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. As an impact it is known to affect availability. CVE summarizes:

An integer overflow was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to cause unexpected system termination.

The advisory is available at support.apple.com. This vulnerability was named CVE-2026-43764 since 05/02/2026. The exploitation appears to be easy. Local access is required to approach this attack. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 07/28/2026).

Upgrading to version 14.8.8, 15.7.8 or 26.6 eliminates this vulnerability.

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Productinfo

Type

• Operating System

Vendor

• Apple

Name

• macOS

Version

• 14.8.0
• 14.8.1
• 14.8.2
• 14.8.3
• 14.8.4
• 14.8.5
• 14.8.6
• 14.8.7
• 15.7.0
• 15.7.1
• 15.7.2
• 15.7.3
• 15.7.4
• 15.7.5
• 15.7.6
• 15.7.7
• 26.0
• 26.1
• 26.2
• 26.3
• 26.4
• 26.5

License

• commercial

Website

• Vendor: https://www.apple.com/

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