---
id: "CVE-2026-112540"
kind: "vulnerability"
aliases: ["CVE-2026-112540"]
title: "macOS: integer overflow in file parsing crashes apps when opening crafted files"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["mac-fleet", "macos", "other"]
not_affected_if: ["already-patched-macos"]
published_at: "2026-10-26T21:17:46+00:00"
first_seen_at: "2026-10-26T21:20:27+00:00"
updated_at: "2026-10-26T21:28:08+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112540", "first_seen_at": "2026-10-26T21:20:27+00:00"}]
---

# macOS: integer overflow in file parsing crashes apps when opening crafted files

An integer overflow in macOS input handling can be triggered by processing a maliciously crafted file. The source says the result is unexpected app termination, which is a crash rather than code execution.

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

## How to check

- Check the macOS version with `sw_vers`
- unknown

## Fix

- Update macOS to `27.2` (Golden Gate), `15.8.2` (Sequoia) or `26.7.2` (Tahoe), per the advisory
- unknown

## Timeline

- 2026-10-26T21:20:27+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-112540

## From the sources

An integer overflow was addressed with improved input validation. This issue is fixed in macOS Golden Gate 27.2, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. Processing a maliciously crafted file may lead to unexpected app 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_