---
id: "CVE-2026-112556"
kind: "vulnerability"
aliases: ["CVE-2026-112556"]
title: "macOS: race condition lets attackers tamper with signed apps"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["endpoints", "infrastructure", "mac-fleet", "macos"]
not_affected_if: ["already-patched-macos"]
published_at: "2026-10-26T21:17:49+00:00"
first_seen_at: "2026-10-26T21:20:28+00:00"
updated_at: "2026-10-26T21:27:55+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112556", "first_seen_at": "2026-10-26T21:20:28+00:00"}]
---

# macOS: race condition lets attackers tamper with signed apps

A race condition in macOS allows an attacker to tamper with code-signed applications so that arbitrary code runs in the application's context. Apple fixed it with additional validation in macOS Golden Gate 27.2, Sequoia 15.8.2 and Tahoe 26.7.2.

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

## How to check

- `sw_vers -productVersion` on each Mac to see whether it is below `27.2`, `15.8.2` or `26.7.2` for its release line
- Check Software Update in System Settings for pending macOS updates

## Fix

- Update macOS to `27.2` (Golden Gate), `15.8.2` (Sequoia) or `26.7.2` (Tahoe), matching the installed major release

## Timeline

- 2026-10-26T21:20:28+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-112556

## From the sources

A race condition was addressed with additional validation. This issue is fixed in macOS Golden Gate 27.2, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. An attacker may tamper with code-signed applications to execute arbitrary code in the application's context.

---

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