CVE-2026-86950

Published: Sep 28, 2026Modified: Oct 1, 2026CISA KEV

8.8

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitability: 2.8 / Impact: 5.9

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in 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 (4)

Products: Apple: Ipados, Iphone Os, Macos

3 products

Configuration A

4 vulnerable

Vulnerable Software	Affected Versions
Apple Ipados	Before 26.7.1
Apple Iphone Os	Before 26.7.1
Apple Macos	Before 15.8.1
Apple Macos	From 26.0 to 26.7.1

Related CWEs

Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

References (7)

https://support.apple.com/en-us/149226

Source: product-security@apple.com

Release NotesVendor Advisory

https://support.apple.com/en-us/149228

Source: product-security@apple.com

Release NotesVendor Advisory

https://support.apple.com/en-us/149229

Source: product-security@apple.com

Release NotesVendor Advisory

http://seclists.org/fulldisclosure/2026/Sep/89

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListThird Party Advisory

http://seclists.org/fulldisclosure/2026/Sep/90

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListThird Party Advisory

http://seclists.org/fulldisclosure/2026/Sep/91

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListThird Party Advisory

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-86950

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

US Government Resource

Timeline

No history available yet.