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.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00208.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Apple iOS and iPadOS affected
Version Status Constraints
0 affected < 26.7
0 affected < 27
Apple macOS affected
Version Status Constraints
0 affected < 15.8
0 affected < 26.7
0 affected < 27
Apple tvOS affected
Version Status Constraints
0 affected < 27
Apple visionOS affected
Version Status Constraints
0 affected < 27
Apple watchOS affected
Version Status Constraints
0 affected < 27

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://support.apple.com/en-us/149034 cve-icon cve-icon
https://support.apple.com/en-us/149035 cve-icon cve-icon
https://support.apple.com/en-us/149036 cve-icon cve-icon
https://support.apple.com/en-us/149037 cve-icon cve-icon
https://support.apple.com/en-us/149038 cve-icon cve-icon
https://support.apple.com/en-us/149041 cve-icon cve-icon
https://support.apple.com/en-us/149042 cve-icon cve-icon
https://support.apple.com/en-us/149043 cve-icon cve-icon
History

Tue, 15 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-787
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 15 Sep 2026 09:15:00 +0000

Type Values Removed Values Added
Title Out-of-Bounds Write Leading to Kernel Memory Modification and System Crash in Apple Operating Systems
Weaknesses CWE-119

Tue, 15 Sep 2026 02:00:00 +0000

Type Values Removed Values Added
First Time appeared Apple
Apple ios And Ipados
Apple macos
Apple tvos
Apple visionos
Apple watchos
Vendors & Products Apple
Apple ios And Ipados
Apple macos
Apple tvos
Apple visionos
Apple watchos

Mon, 14 Sep 2026 21:00:00 +0000

Type Values Removed Values Added
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.
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: apple

Published:

Updated: 2026-09-15T15:07:45.300Z

Reserved: 2026-09-01T21:13:17.749Z

Link: CVE-2026-84523

cve-icon Vulnrichment

Updated: 2026-09-15T15:07:19.495Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-09-14T21:17:28.863

Modified: 2026-09-15T16:17:30.907

Link: CVE-2026-84523

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-15T09:00:16Z

Weaknesses