CVE-2026-84497

Buffer Overflow in Apple OS Components Allows Process Termination via Malicious Files

Published Sep 14, 2026 CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Description

A buffer overflow was addressed with improved size 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 lead to unexpected process termination.

Analysis

Technical impact

A buffer overflow was caused by improper size validation in Apple OS components. Opening a specially crafted file can trigger the flaw, causing the targeted process to crash unexpectedly. The crash does not directly expose code execution, but it can destabilize the system and disrupt services that rely on the affected process.

Affected Systems

The vulnerability affects Apple devices running iOS earlier than version 26.7 or 27, iPadOS earlier than 26.7 or 27, macOS Golden Gate earlier than 27, macOS Sequoia earlier than 15.8, macOS Tahoe earlier than 26.7, tvOS earlier than 27, and visionOS earlier than 27. The flaw is fixed in the listed advisory versions; all earlier releases remain vulnerable until an update is applied.

Risk and Exploitability

It is not listed in CISA KEV and has an EPSS score below 1%, indicating a very low probability of exploitation. The CVSS score is 7.8, indicating high severity. The vulnerability remains local or user‑initiated, as it requires opening a maliciously crafted file. The impact is a denial of service via unexpected process termination, which can disrupt affected services but does not provide arbitrary code execution or privilege escalation.

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

Apply the latest security updates for iOS, iPadOS, macOS, tvOS, and visionOS that include the patch for this buffer overflow, which are iOS 26.7 or later, iOS 27 or later, iPadOS 26.7 or later, iPadOS 27 or later, macOS Golden Gate 27 or later, macOS Sequoia 15.8 or later, macOS Tahoe 26.7 or later, tvOS 27 or later, and visionOS 27 or later.
If an immediate update is unavailable, isolate or disable the affected application or service that could process malicious files to reduce the attack surface.
Implement file‑type whitelisting or sandboxing on all Apple devices to prevent the execution of potentially dangerous files until the vulnerability is fully patched.

Generated by OpenCVE AI on September 20, 2026 at 20:28 UTC.

Tracking

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.188% probability within 30 days)

Exploitation none

Automatable no

Technical Impact total

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 8:45 PM Title updated View changes

Type	Values Removed	Values Added
Title		Buffer Overflow in Apple OS Components Allows Process Termination via Malicious Files

Sep 16, 2026 6:45 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 16, 2026 4:30 PM Weaknesses updated. Scoring metrics updated View changes

Type	Values Removed	Values Added
Weaknesses		CWE-120
Metrics		cvssV3_1 `{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Sep 16, 2026 1:15 PM Title updated. Weaknesses updated View changes

Type	Values Removed	Values Added
Title	Buffer Overflow in Apple OS Components Allows Process Crash
Weaknesses	CWE-119 CWE-120

Sep 15, 2026 11:30 AM Title updated. Weaknesses updated View changes

Type	Values Removed	Values Added
Title		Buffer Overflow in Apple OS Components Allows Process Crash
Weaknesses		CWE-119 CWE-120

Sep 15, 2026 7:45 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		A buffer overflow was addressed with improved size 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 lead to unexpected process termination.
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