CVE-2026-28991

HighCVSS 7.5/10Last modified Oct 26, 2026

Description

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.8.2, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. An app may be able to cause a denial-of-service.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-125

Affected software

Vendor	Product	Versions
Apple	iOS and iPadOS	< 26.5
Apple	macOS	< 15.8.2; < 26.5
Apple	tvOS	< 26.5
Apple	visionOS	< 26.5
Apple	watchOS	< 26.5

References

https://support.apple.com/en-us/127110Release Notes, Vendor Advisory
https://support.apple.com/en-us/127115Release Notes, Vendor Advisory
https://support.apple.com/en-us/127118Release Notes, Vendor Advisory
https://support.apple.com/en-us/127119Release Notes, Vendor Advisory
https://support.apple.com/en-us/127120Release Notes, Vendor Advisory
https://support.apple.com/en-us/149523

Timeline

Published: May 11, 2026
Last modified: Oct 26, 2026
NVD status: Modified

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