---
id: "CVE-2026-86959"
kind: "vulnerability"
aliases: ["CVE-2026-86959"]
title: "Apple iOS and macOS: crafted image crashes a process via input validation"
severity: "low"
cvss: null
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["apple", "infrastructure", "ios", "ipados", "macos"]
not_affected_if: ["already-updated"]
published_at: "2026-10-20T01:17:28+00:00"
first_seen_at: "2026-10-23T21:57:19+00:00"
updated_at: "2026-10-25T05:04:58+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-86959", "first_seen_at": "2026-10-23T21:57:19+00:00"}]
---

# Apple iOS and macOS: crafted image crashes a process via input validation

Apple's operating systems mishandle a maliciously crafted image, causing a process to terminate unexpectedly. The sources describe a crash (denial of service), not code execution or data access.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the device OS version in Settings > General > About (iOS/iPadOS) or About This Mac (macOS) against the fixed versions below
- unknown for any other check, the sources do not say

## Fix

- Update iOS and iPadOS to `26.7` or `27`
- Update macOS Tahoe to `26.7`, macOS Sequoia to `15.8`, or macOS Golden Gate to `27`

## Timeline

- 2026-10-23T21:57:19+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-86959

## From the sources

An input validation issue was addressed with improved input validation. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Processing a maliciously crafted image may lead to unexpected process termination.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_