What’s Vulnerable › Vulnerabilities

CVE-2026-86950: Apple Multiple Products Out-of-Bounds Write Vulnerability

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2026-09-29
• EPSS: 26.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-28 · updated 2026-10-27
• Weakness: CWE-787

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.

Affected products

• Apple iPadOS: before 18.7.11; from 26.0 before 26.7.1 — fixed in 18.7.11, 26.7.1
• Apple Iphone Os: before 18.7.11; from 26.0 before 26.7.1 — fixed in 18.7.11, 26.7.1
• Apple macOS: before 15.8.1; from 26.0 before 26.7.1 — fixed in 15.8.1, 26.7.1
• Apple iOS and iPadOS: before 18.7.11; before 26.7.1 — fixed in 18.7.11, 26.7.1
• Apple macOS: before 15.8.1; before 26.7.1 — fixed in 15.8.1, 26.7.1

How to fix

Upgrade to a fixed version: Apple iPadOS 18.7.11, 26.7.1; Apple Iphone Os 18.7.11, 26.7.1; Apple macOS 15.8.1, 26.7.1; Apple iOS and iPadOS 18.7.11, 26.7.1; Apple macOS 15.8.1, 26.7.1. Check the vendor advisory for mitigations.

In the news

• Apple Backports Fix for Exploited CoreGraphics Flaw to Older iPhones and iPads
• iOS, macOS 27.2 Patch 286 Bugs; Fix for Exploited Flaw Backported to iOS 18
• Apple Patches for October 2026, (Mon, Oct 26th)

References

• https://support.apple.com/en-us/149225
• https://support.apple.com/en-us/149226
• https://support.apple.com/en-us/149228
• https://support.apple.com/en-us/149229
• http://seclists.org/fulldisclosure/2026/Sep/89
• http://seclists.org/fulldisclosure/2026/Sep/90
• http://seclists.org/fulldisclosure/2026/Sep/91
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-86950

Get alerted when CVE-2026-86950 or the next vulnerability affects your stack