---
id: "CVE-2026-112638"
kind: "vulnerability"
aliases: ["CVE-2026-112638"]
title: "Apple iOS and macOS: heap overflow lets a nearby attacker crash the system"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["apple", "infrastructure", "ios", "ipados", "macos", "tvos", "visionos", "watchos"]
not_affected_if: ["already-patched"]
published_at: "2026-10-26T21:17:57+00:00"
first_seen_at: "2026-10-26T21:20:29+00:00"
updated_at: "2026-10-26T21:24:03+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112638", "first_seen_at": "2026-10-26T21:20:29+00:00"}]
---

# Apple iOS and macOS: heap overflow lets a nearby attacker crash the system

A heap buffer overflow in Apple's operating systems can be triggered by an attacker within radio range, causing unexpected system termination. The sources describe a denial-of-service impact only, with no code execution stated.

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

## How to check

- Check the device OS version under Settings > General > About (iOS, iPadOS, watchOS, tvOS, visionOS) or `sw_vers` on macOS.
- Compare the installed version against the fixed versions listed in the sources.

## 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`, or macOS Golden Gate to `27.2`.
- Update tvOS, visionOS and watchOS to `27.2`.

## Timeline

- 2026-10-26T21:20:29+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-112638

## From the sources

A heap 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, tvOS 27.2, visionOS 27.2, watchOS 27.2. An attacker in radio range may be able to cause unexpected system termination.

---

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