---
id: "CVE-2026-86875"
kind: "vulnerability"
aliases: ["CVE-2026-86875"]
title: "Xcode: malformed binary parsing crashes apps, fixed in Xcode 27"
severity: "medium"
cvss: 4.3
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["ios", "macos", "other", "xcode"]
not_affected_if: ["no-untrusted-binaries"]
published_at: "2026-10-20T01:17:25+00:00"
first_seen_at: "2026-10-23T21:57:19+00:00"
updated_at: "2026-10-25T04:39:28+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-86875", "first_seen_at": "2026-10-23T21:57:19+00:00"}]
---

# Xcode: malformed binary parsing crashes apps, fixed in Xcode 27

Xcode has an input validation flaw in how it parses binaries. A maliciously crafted binary can make the app terminate unexpectedly.

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

## How to check

- Run `xcodebuild -version` to see the installed Xcode version.
- unknown

## Fix

- Update Xcode to `27` or later.

## Timeline

- 2026-10-23T21:57:19+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-86875

## From the sources

An input validation issue was addressed with improved input validation. This issue is fixed in Xcode 27. Parsing a maliciously crafted binary may lead to unexpected app termination.

---

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