CVE-2026-86950
Apple iOS and iPadOS, Apple macOS
Published 28 Sept 2026 · updated 1 Oct 2026 · Analyzed
Exploited in the wild
CISA added this to its Known Exploited Vulnerabilities catalog on 29 Sept 2026, with a remediation deadline of 2 Oct 2026 for US federal agencies.
Required action: 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.
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.
References
- support.apple.com/en-us/149226 · Release Notes, Vendor Advisory
- support.apple.com/en-us/149228 · Release Notes, Vendor Advisory
- support.apple.com/en-us/149229 · Release Notes, Vendor Advisory
- seclists.org/fulldisclosure/2026/Sep/89 · Mailing List, Third Party Advisory
- seclists.org/fulldisclosure/2026/Sep/90 · Mailing List, Third Party Advisory
- seclists.org/fulldisclosure/2026/Sep/91 · Mailing List, Third Party Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-86950 · US Government Resource