Apple Multiple Products Out-of-Bounds Write Vulnerability
This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run Multiple Products, fix it now.
CISA 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.
US federal civilian agencies must remediate by Oct 2, 2026.
No official fix confirmed yet
Until a fix ships, follow the vendor's mitigations and CISA's required action, limit exposure of affected systems, and watch this record for a patch.
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.
Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.
| Product | Vendor | Affected versions | Fixed in | Source |
|---|---|---|---|---|
| iOS & iPadOS | Apple | < 26.7.1 | 26.7.1 | NVD |
| macOS | Apple | < 15.8.1; >= 26.0, < 26.7.1 | 15.8.1; 26.7.1 | NVD |
| Multiple Products | Apple | — | — | KEV |
Sources: NVD = NIST National Vulnerability Database; KEV = CISA Known Exploited Vulnerabilities catalog.
Developments from the last 30 days, newest first.
CVE-2026-86950 scored CVSS 8.8: Apple Multiple Products, Apple Multiple Products Out-of-Bounds Write Vulnerability
CISA lists this as exploited in the wild. Unpatched Multiple Products systems are exposed to active attacks now.
Basis: NIST National Vulnerability Database
CVE-2026-86950 added to CISA KEV: Apple Multiple Products, Apple Multiple Products Out-of-Bounds Write Vulnerability
CISA lists this as exploited in the wild. Unpatched Multiple Products systems are exposed to active attacks now.
Basis: CISA Known Exploited Vulnerabilities catalog
CISA lists this as exploited in the wild. Unpatched macOS and iOS & iPadOS systems are exposed to active attacks now.
Treat this as an emergency.
CISA lists this as exploited in the wild. Unpatched BIG-IP and Multiple Products systems are exposed to active attacks now.
Treat this as an emergency.
