CVE-2026-84532

Out-of-Bounds Read in Apple File Handling Allows Process Termination or Memory Disclosure

Published Sep 14, 2026 CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed

Description

An out-of-bounds read issue was addressed with improved input validation. 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. Opening a maliciously crafted file may cause unexpected process termination or disclose process memory.

Analysis

Technical impact

An out-of-bounds read was identified in the file handling logic on Apple platforms. When a maliciously crafted file is opened, the operating system may read beyond the intended data boundaries, leading to either unexpected process termination or the disclosure of data residing in process memory. This flaw can compromise confidentiality and availability.

Affected Systems

Apple iOS and iPadOS releases prior to 26.7, macOS Golden Gate and earlier releases before 27, macOS Sequoia releases before 15.8, macOS Tahoe releases before 26.7, tvOS releases before 27, and visionOS releases before 27 are affected by the issue.

Risk and Exploitability

The vulnerability can be leveraged simply by opening a crafted file, making it available to users who can trigger it. An EPSS score of < 1% indicates a very low probability of exploitation, and the flaw is not listed in the CISA KEV catalog. The CVSS score of 5.4 classifies the issue as moderate severity, but the potential impact of process memory disclosure and a system crash still poses a significant threat to affected devices when untrusted files are accessed.

Affected Products

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

Configuration 1 [-]

OR	cpe:2.3:o:apple:ipados::::::::
	cpe:2.3:o:apple:iphone_os::::::::
	cpe:2.3:o:apple:macos::::::::
	cpe:2.3:o:apple:macos::::::::
	cpe:2.3:o:apple:tvos::::::::
	cpe:2.3:o:apple:visionos::::::::

No data.

Vendor Product Versions

Apple

Ios And Ipados

Version	Status	Scheme	Platform
`[0,26.7)`	affected	generic	—
`[0,27)`	affected	generic	—

Apple

Macos

Version	Status	Scheme	Platform
`[0,15.8)`	affected	generic	—
`[0,26.7)`	affected	generic	—
`[0,27)`	affected	generic	—

Apple

Tvos

Version	Status	Scheme	Platform
`[0,27)`	affected	generic	—

Apple

Visionos

Version	Status	Scheme	Platform
`[0,27)`	affected	generic	—

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Upgrade the affected Apple operating systems to iOS 26.7, 27 or later, iPadOS 26.7, 27 or later, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7 or later, tvOS 27, or visionOS 27, as applicable. This update corrects the input validation in file handling that caused the out-of-bounds read.
Restrict access to untrusted documents by using sandboxed or read-only containers, and review file handling policies to ensure that only expected file formats are opened without additional validation.
Monitor for application crashes or abnormal memory behavior after accessing files, and apply vendor security advisories promptly while waiting for future updates to further harden the file parsing logic.

Generated by OpenCVE AI on September 20, 2026 at 19:31 UTC.

Tracking

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact Low

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.368% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://support.apple.com/en-us/149034
https://support.apple.com/en-us/149035
https://support.apple.com/en-us/149036
https://support.apple.com/en-us/149038
https://support.apple.com/en-us/149041
https://support.apple.com/en-us/149042
https://support.apple.com/en-us/149043

History

Sep 20, 2026 8:00 PM Title updated View changes

Type	Values Removed	Values Added
Title		Out-of-Bounds Read in Apple File Handling Allows Process Termination or Memory Disclosure

Sep 18, 2026 9:30 PM First appearance in the feed. Affected versions updated. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Apple ipados Apple iphone Os
CPEs		cpe:2.3:o:apple:ipados:::::::: cpe:2.3:o:apple:iphone_os:::::::: cpe:2.3:o:apple:macos:::::::: cpe:2.3:o:apple:tvos:::::::: cpe:2.3:o:apple:visionos::::::::
Vendors & Products		Apple ipados Apple iphone Os

Sep 17, 2026 5:30 PM Weaknesses updated. Scoring metrics updated View changes

Type	Values Removed	Values Added
Weaknesses		CWE-125
Metrics		cvssV3_1 `{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Sep 16, 2026 11:00 AM Title updated. Weaknesses updated View changes

Type	Values Removed	Values Added
Title	Out‑of‑Bounds Read in File Handling Causes Termination or Memory Disclosure on Apple Platforms
Weaknesses	CWE-20

Sep 15, 2026 9:15 AM Title updated. Weaknesses updated View changes

Type	Values Removed	Values Added
Title		Out‑of‑Bounds Read in File Handling Causes Termination or Memory Disclosure on Apple Platforms
Weaknesses		CWE-20

Sep 15, 2026 2:00 AM First appearance in the feed. Affected vendors updated View changes

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

Sep 14, 2026 9:00 PM Description updated. Added references View changes

Type	Values Removed	Values Added
Description		An out-of-bounds read issue was addressed with improved input validation. 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. Opening a maliciously crafted file may cause unexpected process termination or disclose process memory.
References		https://support.apple.com/en-us/149034 https://support.apple.com/en-us/149035 https://support.apple.com/en-us/149036 https://support.apple.com/en-us/149038 https://support.apple.com/en-us/149041 https://support.apple.com/en-us/149042 https://support.apple.com/en-us/149043