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

How to check if you are exposed to CVE-2024-23222

1. Find every Apple Multiple Products system you or your clients run, including ones exposed to the internet. Those come first: CISA only lists flaws attackers are already using.
2. Compare each version with the fixed versions in the vendor advisory below. Where no fix exists yet, apply the vendor’s mitigation or take the system off the internet.
3. Run a credentialed vulnerability scan to catch the systems you missed, then check that the next scan no longer reports CVE-2024-23222.

US federal agencies had to fix this by 2024-02-13. Everyone else should treat that deadline as a guide: if it has passed, this is overdue.

Affected versions

Versions the National Vulnerability Database lists as vulnerable to CVE-2024-23222. Check the vendor advisory for the exact fixed builds before you sign anything off.

Timeline

1. 2024-01-23 · Published in the National Vulnerability Database
2. 2024-01-23 · Added to CISA's Known Exploited Vulnerabilities catalog, the same day it was published
3. 2024-02-13 · Fix-by date for US federal agencies, passed 992 days ago

Vendor advisories and fixes

• https://support.apple.com/en-us/HT214055
• https://support.apple.com/en-us/HT214056
• https://support.apple.com/en-us/HT214057
• https://support.apple.com/en-us/HT214058
• https://support.apple.com/en-us/HT214059
• https://support.apple.com/en-us/HT214061

Weakness type

• CWE-843

More exploited Apple vulnerabilities

CISA lists 95 exploited Apple vulnerabilities. The closest matches:

• CVE-2026-86950Apple Multiple Products Out-of-Bounds Write VulnerabilityAdded 2026-09-29
• CVE-2025-43520Apple Multiple Products Classic Buffer Overflow VulnerabilityAdded 2026-03-20
• CVE-2025-43510Apple Multiple Products Improper Locking VulnerabilityAdded 2026-03-20
• CVE-2025-31277Apple Multiple Products Buffer Overflow VulnerabilityAdded 2026-03-20
• CVE-2023-43000Apple Multiple products Use-After-Free VulnerabilityAdded 2026-03-05
• CVE-2021-30952Apple Multiple Products Integer Overflow or Wraparound VulnerabilityAdded 2026-03-05
• CVE-2026-20700Apple Multiple Buffer Overflow VulnerabilityAdded 2026-02-12
• CVE-2025-43529Apple Multiple Products Use-After-Free WebKit VulnerabilityAdded 2025-12-15

Keep going

• All exploited CVEs
• Check another CVE
• What is CISA KEV?
• What is EPSS?

Sources: CISA Known Exploited Vulnerabilities catalog (version 2026.10.30); EPSS data from FIRST.org; CVSS and descriptions from the NIST National Vulnerability Database. Checked 2026-11-01. This product uses the NVD API but is not endorsed or certified by the NVD.