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

> CVE-2026-86950: Apple Multiple Products Out-of-Bounds Write Vulnerability. CVSS 8.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2026-86950
Last updated: 2026-10-01T18:17:28Z

- Published: 2026-09-28 19:13 UTC · Updated: 2026-10-01 18:17 UTC · Assigner: apple
- CVSS: 8.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS: 26.2%, 98th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2026-09-29, federal due date 2026-10-13, ransomware use: Unknown

## 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.

## 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.

## Affected vendors and products

- Apple: iOS and iPadOS
- Apple: macOS

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-86950)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-86950)
- [https://support.apple.com/en-us/149226](https://support.apple.com/en-us/149226)
- [https://support.apple.com/en-us/149228](https://support.apple.com/en-us/149228)
- [https://support.apple.com/en-us/149229](https://support.apple.com/en-us/149229)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-86950 · Markdown: https://rewindex.com/cve/CVE-2026-86950.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-86950 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:12:11.560Z