CVE-2026-86950
high CISA KEVApple Multiple Products Out-of-Bounds Write Vulnerability
Vendor / product: Apple — Multiple Products
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Required action (CISA)
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.
Affected products
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
References
- https://support.apple.com/en-us/149225 product-security@apple.com
- https://support.apple.com/en-us/149226 product-security@apple.com
- https://support.apple.com/en-us/149228 product-security@apple.com
- https://support.apple.com/en-us/149229 product-security@apple.com
- http://seclists.org/fulldisclosure/2026/Sep/89 af854a3a-2127-422b-91ae-364da2661108
- http://seclists.org/fulldisclosure/2026/Sep/90 af854a3a-2127-422b-91ae-364da2661108
- http://seclists.org/fulldisclosure/2026/Sep/91 af854a3a-2127-422b-91ae-364da2661108
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-86950 134c704f-9b21-4f2e-91b3-4a467353bcc0