---
id: "CVE-2026-86991"
kind: "vulnerability"
aliases: ["CVE-2026-86991"]
title: "Apple iOS and macOS: crafted file can crash a process, fixed in 26.7.2 and 27.2"
severity: "low"
cvss: null
epss: null
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["apple", "ios", "ipados", "macos", "vendor", "visionos"]
not_affected_if: ["already-updated"]
published_at: "2026-10-26T21:20:38+00:00"
first_seen_at: "2026-10-26T21:55:22+00:00"
updated_at: "2026-10-26T21:56:24+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-86991", "first_seen_at": "2026-10-26T21:55:22+00:00"}]
---

# Apple iOS and macOS: crafted file can crash a process, fixed in 26.7.2 and 27.2

A buffer overflow in Apple's software lets a maliciously crafted file terminate the process that opens it. The sources describe a crash only, with no code execution or data exposure stated.

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

## How to check

- unknown

## Fix

- Update iOS and iPadOS to `26.7.2` or `27.2`
- Update macOS Tahoe to `26.7.2`, macOS Sequoia to `15.8.2`, and macOS Golden Gate to `27.2`
- Update visionOS to `27.2`

## Timeline

- 2026-10-26T21:55:22+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-86991

## From the sources

A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.7.2 and iPadOS 26.7.2, iOS 27.2 and iPadOS 27.2, macOS Golden Gate 27.2, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2, visionOS 27.2. Processing a maliciously crafted file may lead to unexpected process termination.

---

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