# CVE-2022-42856: Apple iOS Type Confusion Vulnerability

> CVE-2022-42856: Apple iOS Type Confusion Vulnerability. CVSS 8.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2022-42856
Last updated: 2025-10-21T23:15:29Z

- Published: 2022-12-15 00:00 UTC · Updated: 2025-10-21 23:15 UTC · Assigner: apple
- CVSS: 8.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS: 8.5%, 95th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2022-12-14, federal due date 2023-01-04, ransomware use: Unknown

## Description

A type confusion issue was addressed with improved state handling. This issue is fixed in Safari 16.2, tvOS 16.2, macOS Ventura 13.1, iOS 15.7.2 and iPadOS 15.7.2, iOS 16.1.2. 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 against versions of iOS released before iOS 15.1..

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- Apple: tvOS

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2022-42856)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2022-42856)
- [http://seclists.org/fulldisclosure/2022/Dec/21](http://seclists.org/fulldisclosure/2022/Dec/21)
- [http://seclists.org/fulldisclosure/2022/Dec/22](http://seclists.org/fulldisclosure/2022/Dec/22)
- [http://seclists.org/fulldisclosure/2022/Dec/23](http://seclists.org/fulldisclosure/2022/Dec/23)
- [http://seclists.org/fulldisclosure/2022/Dec/26](http://seclists.org/fulldisclosure/2022/Dec/26)
- [http://seclists.org/fulldisclosure/2022/Dec/28](http://seclists.org/fulldisclosure/2022/Dec/28)
- [https://security.gentoo.org/glsa/202305-32](https://security.gentoo.org/glsa/202305-32)
- [https://support.apple.com/en-us/HT213516](https://support.apple.com/en-us/HT213516)
- [https://support.apple.com/en-us/HT213531](https://support.apple.com/en-us/HT213531)
- [https://support.apple.com/en-us/HT213532](https://support.apple.com/en-us/HT213532)
- [https://support.apple.com/en-us/HT213535](https://support.apple.com/en-us/HT213535)
- [https://support.apple.com/en-us/HT213537](https://support.apple.com/en-us/HT213537)
- [http://www.openwall.com/lists/oss-security/2022/12/26/1](http://www.openwall.com/lists/oss-security/2022/12/26/1)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2022-42856 · Markdown: https://rewindex.com/cve/CVE-2022-42856.md · JSON: https://rewindex.com/api/v1/cves/CVE-2022-42856 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:50:04.062Z