---
id: "CVE-2023-28206"
kind: "vulnerability"
aliases: ["CVE-2023-28206"]
title: "An out-of-bounds write issue was addressed with improved input validation"
severity: "high"
cvss: 8.6
epss: null
exploited: true
status: "open"
category: "vendor"
products: [{"name": "Apple iOS, iPadOS, and macOS", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "apple ipados", "fixed": ["15.7.5"], "affected": "< 15.7.5", "ecosystem": "vendor"}, {"name": "apple ipados", "fixed": ["16.4.1"], "affected": ">= 16.0, < 16.4.1", "ecosystem": "vendor"}, {"name": "apple iphone os", "fixed": ["15.7.5"], "affected": "< 15.7.5", "ecosystem": "vendor"}, {"name": "apple iphone os", "fixed": ["16.4.1"], "affected": ">= 16.0, < 16.4.1", "ecosystem": "vendor"}, {"name": "apple macos", "fixed": ["11.7.6"], "affected": "< 11.7.6", "ecosystem": "vendor"}, {"name": "apple macos", "fixed": ["12.6.5"], "affected": ">= 12.0, < 12.6.5", "ecosystem": "vendor"}, {"name": "apple macos", "fixed": ["13.3.1"], "affected": ">= 13.0, < 13.3.1", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["apple-devices", "exploited", "ios", "ipados", "macos", "vendor"]
not_affected_if: ["fully-patched-devices"]
published_at: "2023-04-10T00:00:00+00:00"
first_seen_at: "2026-10-23T19:11:52+00:00"
updated_at: "2026-10-23T22:29:04+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2023-28206", "first_seen_at": "2026-10-23T19:11:52+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-28206", "first_seen_at": "2026-10-23T22:29:04+00:00"}]
---

# An out-of-bounds write issue was addressed with improved input validation

Apple's IOSurfaceAccelerator component in iOS, iPadOS and macOS has an out-of-bounds write bug. A malicious app can use it to run code with kernel privileges.

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

## Affected

- vendor:Apple iOS, iPadOS, and macOS affected ? fixed ?
- vendor:apple ipados affected < 15.7.5 fixed 15.7.5
- vendor:apple ipados affected >= 16.0, < 16.4.1 fixed 16.4.1
- vendor:apple iphone os affected < 15.7.5 fixed 15.7.5
- vendor:apple iphone os affected >= 16.0, < 16.4.1 fixed 16.4.1
- vendor:apple macos affected < 11.7.6 fixed 11.7.6
- vendor:apple macos affected >= 12.0, < 12.6.5 fixed 12.6.5
- vendor:apple macos affected >= 13.0, < 13.3.1 fixed 13.3.1

## Fix

Apply the Apple updates for iOS, iPadOS and macOS per vendor instructions, as CISA requires.

## Timeline

- 2026-10-23T19:11:52+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2023-28206
- 2026-10-23T22:29:04+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2023-28206

## From the sources

An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in macOS Monterey 12.6.5, iOS 16.4.1 and iPadOS 16.4.1, macOS Ventura 13.3.1, iOS 15.7.5 and iPadOS 15.7.5, macOS Big Sur 11.7.6. An app may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited.

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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_