---
id: "CVE-2023-37450"
kind: "vulnerability"
aliases: ["CVE-2023-37450"]
title: "The issue was addressed with improved checks"
severity: "critical"
cvss: 8.8
epss: null
exploited: true
status: "open"
category: "vendor"
products: [{"name": "Apple Multiple Products", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "apple safari", "fixed": ["16.5.2"], "affected": "< 16.5.2", "ecosystem": "vendor"}, {"name": "apple ipados", "fixed": ["16.6"], "affected": "< 16.6", "ecosystem": "vendor"}, {"name": "apple iphone os", "fixed": ["16.6"], "affected": "< 16.6", "ecosystem": "vendor"}, {"name": "apple macos", "fixed": ["13.5"], "affected": ">= 13.0, < 13.5", "ecosystem": "vendor"}, {"name": "apple tvos", "fixed": ["16.6"], "affected": "< 16.6", "ecosystem": "vendor"}, {"name": "apple watchos", "fixed": ["9.6"], "affected": "< 9.6", "ecosystem": "vendor"}, {"name": "webkitgtk webkitgtk\\+", "fixed": ["2.42.3"], "affected": "< 2.42.3", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["apple-devices", "exploited", "ios", "ipados", "macos", "safari", "vendor", "webkit"]
not_affected_if: ["fully-patched-devices"]
published_at: "2023-07-13T00:00:00+00:00"
first_seen_at: "2026-10-23T19:11:51+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-2023-37450", "first_seen_at": "2026-10-23T19:11:51+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-37450", "first_seen_at": "2026-10-23T22:29:04+00:00"}]
---

# The issue was addressed with improved checks

A WebKit flaw in Apple iOS, iPadOS, macOS and Safari lets a malicious web page run code when the page is processed. CISA lists it as actively exploited.

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

## Affected

- vendor:Apple Multiple Products affected ? fixed ?
- vendor:apple safari affected < 16.5.2 fixed 16.5.2
- vendor:apple ipados affected < 16.6 fixed 16.6
- vendor:apple iphone os affected < 16.6 fixed 16.6
- vendor:apple macos affected >= 13.0, < 13.5 fixed 13.5
- vendor:apple tvos affected < 16.6 fixed 16.6
- vendor:apple watchos affected < 9.6 fixed 9.6
- vendor:webkitgtk webkitgtk\+ affected < 2.42.3 fixed 2.42.3

## How to check

Check the device OS version under Settings > General > About (iOS/iPadOS) or Apple menu > About This Mac (macOS); compare it with the fixed releases in Apple's security notes.

## Fix

Update iOS, iPadOS, macOS and Safari to a release that includes Apple's fix for this CVE; CISA says to discontinue use of products where no update is available.

## Timeline

- 2026-10-23T19:11:51+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2023-37450
- 2026-10-23T22:29:04+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2023-37450

## From the sources

Apple iOS, iPadOS, macOS, and Safari WebKit contain an unspecified vulnerability that leads to code execution when processing maliciously crafted web content. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.

CISA required action: Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.

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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_