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Actively exploited

CVE-2024-23222 Apple Multiple Products WebKit Type Confusion Vulnerability

Apple iOS, iPadOS, macOS, tvOS, and Safari WebKit contain a type confusion 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.

From the CISA KEV catalogue version 2026.11.06, with Cybergen analysis. Updated 6 Nov 2026.

Our Assessment

Should You Worry?

Patch urgentlyCybergen assessment
  • CISA confirmed exploitation in the wild and added it to the Known Exploited Vulnerabilities catalogue on 23 Jan 2024.
  • Rated High severity (CVSS 8.8, scored by CISA).
  • It has been in the catalogue for 1,018 days. Systems still unpatched now have almost certainly been scanned for it.
The Vulnerability

What It Is

A type confusion issue was addressed with improved checks. This issue is fixed in Safari 17.3, iOS 15.8.7 and iPadOS 15.8.7, iOS 16.7.5 and iPadOS 16.7.5, iOS 17.3 and iPadOS 17.3, macOS Monterey 12.7.3, macOS Sonoma 14.3, macOS Ventura 13.6.4, tvOS 17.3, visionOS 1.0.2. Processing maliciously crafted web content may lead to arbitrary code execution. This fix associated with the Coruna exploit was shipped in iOS 17.3 on January 22, 2024. This update brings that fix to devices that cannot update to the latest iOS version.

Affected Versions

ProductVersions
Apple Safaribefore 17.3
Apple iOS and iPadOSbefore 15.8.7
before 16.7.5
before 17.3
Apple macOSbefore 12.7.3
before 13.6.4
before 14.3
Apple tvOSbefore 17.3
Apple visionOSbefore 1.0.2

From the public CVE record, as supplied by the vendor. Always confirm against the vendor advisory.

From Watch to Action

What To Do Now

  1. 1

    Find it

    Search your asset inventory and external attack surface for Apple Multiple Products. Include cloud images, appliances and anything a supplier runs for you.

    Attack Surface Management
  2. 2

    Fix it

    Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

    Vulnerability Management
  3. 3

    Hunt for compromise

    If an affected system was reachable before you patched, assume it may have been hit. Check logs, new accounts, web shells and outbound connections from the date of exposure.

    Incident Response
  4. 4

    Prove it is fixed

    Rescan or test the system after patching. Upgrades that fail silently and forgotten secondary instances are common.

    Penetration Testing

Vendor Advisories

Regulation

The Compliance Clock

Cyber EssentialsRated high, so if it affects devices in your Cyber Essentials scope, the update must be installed within 14 days of the vendor releasing it.NIS2If exploitation causes a significant incident, essential and important entities owe their CSIRT an early warning within 24 hours and a notification within 72 hours.DORAFinancial entities must classify ICT incidents and send an initial notification for a major incident within strict deadlines, with exploited flaws a common cause.US federal (BOD 22-01)Federal civilian agencies had until 13 Feb 2024 to remediate. A sensible benchmark for everyone else.

General guidance, not legal advice. Your obligations depend on your sector, scope and jurisdiction.

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More Exploited Apple Flaws

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Evidence

Sources

  1. CISA Known Exploited Vulnerabilities catalogue
  2. NVD: CVE-2024-23222
  3. CVE record: CVE-2024-23222
  4. FIRST EPSS
  5. support.apple.com/en-us/HT214055, https://support.apple.com/en-us/HT214056, https://support.apple.c
  6. support.apple.com/en-us/118479
  7. support.apple.com/en-us/120304
  8. support.apple.com/en-us/120305
  9. support.apple.com/en-us/120307
  10. support.apple.com/en-us/120309
  11. support.apple.com/en-us/120310
  12. support.apple.com/en-us/120311