---
id: "CVE-2022-32893"
kind: "vulnerability"
aliases: ["CVE-2022-32893"]
title: "An out-of-bounds write issue was addressed with improved bounds checking"
severity: "high"
cvss: 8.8
epss: 0.09931
exploited: true
status: "open"
category: "vendor"
products: [{"name": "Apple iOS and macOS", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "apple safari", "fixed": ["15.6.1"], "affected": "< 15.6.1", "ecosystem": "vendor"}, {"name": "apple ipados", "fixed": ["15.6.1"], "affected": "< 15.6.1", "ecosystem": "vendor"}, {"name": "apple iphone os", "fixed": ["15.6.1"], "affected": "< 15.6.1", "ecosystem": "vendor"}, {"name": "apple macos", "fixed": ["12.5.1"], "affected": ">= 12.0, < 12.5.1", "ecosystem": "vendor"}, {"name": "fedoraproject fedora", "fixed": [], "affected": "= 35", "ecosystem": "vendor"}, {"name": "fedoraproject fedora", "fixed": [], "affected": "= 36", "ecosystem": "vendor"}, {"name": "debian linux", "fixed": [], "affected": "= 10.0", "ecosystem": "vendor"}, {"name": "debian linux", "fixed": [], "affected": "= 11.0", "ecosystem": "vendor"}, {"name": "webkitgtk", "fixed": ["2.36.7"], "affected": "< 2.36.7", "ecosystem": "vendor"}, {"name": "wpewebkit wpe webkit", "fixed": ["2.36.7"], "affected": "< 2.36.7", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["exploited", "ios", "macos", "safari", "vendor"]
not_affected_if: ["fully-patched-devices"]
published_at: "2022-08-18T00:00:00+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-2022-32893", "first_seen_at": "2026-10-23T19:11:52+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2022-32893", "first_seen_at": "2026-10-23T19:13:45+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-32893", "first_seen_at": "2026-10-23T22:29:04+00:00"}]
---

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

Apple iOS and macOS contain an out-of-bounds write flaw in WebKit-style content processing. A malicious web page can run code on the device when it is opened.

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

## Affected

- vendor:Apple iOS and macOS affected ? fixed ?
- vendor:apple safari affected < 15.6.1 fixed 15.6.1
- vendor:apple ipados affected < 15.6.1 fixed 15.6.1
- vendor:apple iphone os affected < 15.6.1 fixed 15.6.1
- vendor:apple macos affected >= 12.0, < 12.5.1 fixed 12.5.1
- vendor:fedoraproject fedora affected = 35 fixed ?
- vendor:fedoraproject fedora affected = 36 fixed ?
- vendor:debian linux affected = 10.0 fixed ?
- vendor:debian linux affected = 11.0 fixed ?
- vendor:webkitgtk affected < 2.36.7 fixed 2.36.7
- vendor:wpewebkit wpe webkit affected < 2.36.7 fixed 2.36.7

## How to check

Settings > General > Software Update on iOS, or Apple menu > About This Mac on macOS, and compare the build with the patched version in Apple's advisory.

## Fix

Update iOS and macOS to a release that includes Apple's fix for CVE-2022-32893; CISA requires applying the vendor update.

## Timeline

- 2026-10-23T19:11:52+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2022-32893
- 2026-10-23T19:13:45+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2022-32893
- 2026-10-23T22:29:04+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2022-32893

## From the sources

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.6.1 and iPadOS 15.6.1, macOS Monterey 12.5.1, Safari 15.6.1. Processing maliciously crafted web content may lead to arbitrary code execution. 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_