CVE-2026-86950
Description
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.11 and iPadOS 18.7.11, iOS 26.7.1 and iPadOS 26.7.1, macOS Sequoia 15.8.1, macOS Tahoe 26.7.1. Processing a maliciously crafted file may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 27.
How to fix
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
CISA due date: Oct 13, 2026- apple ipados18.7.11, 26.7.1 or later
- apple iphone_os18.7.11, 26.7.1 or later
- apple macos15.8.1, 26.7.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apple ipados | v < 18.7.11, 26.0 ≤ v < 26.7.1 | 18.7.11, 26.7.1 |
| apple iphone_os | v < 18.7.11, 26.0 ≤ v < 26.7.1 | 18.7.11, 26.7.1 |
| apple macos | v < 15.8.1, 26.0 ≤ v < 26.7.1 | 15.8.1, 26.7.1 |
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Attack Surface Management
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