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CVE ID

# CVE-2026-86950

Published 2026-09-28

Updated 24 days ago

Vendor/s

Apple

Product/s

Multiple Products

Version/s

\* > 26.7.1

KEV Status

Active Exploitation

Listed in CISA's Known Exploited Vulnerabilities catalog. Active exploitation observed in the wild.

CVSS Score (v3.1)

8.8

/ 10

High

Severity Details

Base score

8.8 High

Attack vector

Network

Attack complexity

Low

Privileges required

None

User interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Table of Contents

[Description ](#description)[Why this matters ](#why-this-matters)[CPE ](#cpe)[Related weakness (CWE) ](#cwe)[Remediation plan ](#remediation)[Detection Guidance ](#detection-guidance)[References ](#references)[Sources](#sources)

[Description ](#description)[Why this matters ](#why-this-matters)[CPE ](#cpe)[Related weakness (CWE) ](#cwe)[Remediation plan ](#remediation)[Detection Guidance ](#detection-guidance)[References ](#references)[Sources](#sources)

## Description

CVE-2026-86950 is a high-severity Apple vulnerability allowing arbitrary code execution via crafted files, currently under active exploitation.

## Why this matters

"CVE-2026-86950 is a critical out-of-bounds write vulnerability that allows for arbitrary code execution on Apple devices. With a CVSS score of 8.8, the risk is high, particularly as Apple has confirmed reports of active exploitation in targeted attacks. The vulnerability is triggered by processing maliciously crafted files, making it a potent vector for remote compromise via network channels. Given its inclusion in CISA's Known Exploited Vulnerabilities (KEV) catalog, security teams must prioritize remediation to prevent sophisticated actors from gaining full control over mobile and desktop endpoints across the enterprise."

## CPE

Apple

| Product    | Version Start | Version End (excl.) | Status     |
| ---------- | ------------- | ------------------- | ---------- |
| ipados     | \*            | 26.7.1              | vulnerable |
| iphone\_os | \*            | 26.7.1              | vulnerable |
| macos      | \*            | 15.8.1              | vulnerable |
| macos      | 26.0          | 26.7.1              | vulnerable |

## Related weakness (CWE)

CWE-787

## Remediation plan

1

### Apply official patches

Immediately install the security updates provided by Apple for iOS, iPadOS, and macOS. These updates address the out-of-bounds write issue (CWE-787) by implementing improved bounds checking within the affected file-processing components.

2

### Update affected systems

Verify that all Apple devices are updated to at least iOS 26.7.1, iPadOS 26.7.1, macOS Sequoia 15.8.1, or macOS Tahoe 26.7.1. Systems running versions prior to these are considered vulnerable and at risk of exploitation.

3

### Restrict access

Deploy strict email and web filtering to intercept maliciously crafted files. Since the attack vector is network-based and requires user interaction, blocking untrusted attachments and suspicious URLs can significantly reduce the attack surface.

4

### Monitor for exploitation

Use Endpoint Detection and Response (EDR) tools to monitor for unusual process behavior or crashes in system frameworks. Watch for indicators of arbitrary code execution, such as unexpected shell activity or unauthorized memory modifications following file downloads.

## Detection Guidance

"Detection should focus on identifying the processing of malicious files and subsequent abnormal behavior. Monitor system logs for crashes in media-handling frameworks or unexpected shell executions. Look for network traffic to known malicious domains or unusual outbound connections from mobile devices. Since this is an out-of-bounds write, memory integrity monitoring and EDR alerts for heap spray patterns or unauthorized code execution in native Apple applications are key indicators of compromise."

## References

[https://support.apple.com/en-us/149226 Release Notes Vendor Advisory ](https://support.apple.com/en-us/149226)[https://support.apple.com/en-us/149228 Release Notes Vendor Advisory ](https://support.apple.com/en-us/149228)[https://support.apple.com/en-us/149229 Release Notes Vendor Advisory ](https://support.apple.com/en-us/149229)[http://seclists.org/fulldisclosure/2026/Sep/89 Mailing List Third Party Advisory ](http://seclists.org/fulldisclosure/2026/Sep/89)[http://seclists.org/fulldisclosure/2026/Sep/90 Mailing List Third Party Advisory ](http://seclists.org/fulldisclosure/2026/Sep/90)[http://seclists.org/fulldisclosure/2026/Sep/91 Mailing List Third Party Advisory ](http://seclists.org/fulldisclosure/2026/Sep/91)[https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field\_cve=CVE-2026-86950 US Government Resource](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-86950)

## Sources

NIST National Vulnerability Database (NVD)

CISA Known Exploited Vulnerabilities (KEV)

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