CVE DATABASE / CVE-2022-42856
CVE-2022-42856
Apple iOS Type Confusion Vulnerability
Confirmed exploited in the wild. Added 2022-12-14.
Federal remediation due 2023-01-04.
Required action: Apply updates per vendor instructions.
Summary
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..
CVSS 3.1 breakdown
| Base score | 8.8 (HIGH) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| Attack vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | REQUIRED |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity | HIGH |
| Availability | HIGH |
Weakness type (CWE)
Affected products
Use our free CVE Lookup tool for the latest NVD record, or browse the full CISA KEV catalog.
References
- http://seclists.org/fulldisclosure/2022/Dec/21
- http://seclists.org/fulldisclosure/2022/Dec/22
- http://seclists.org/fulldisclosure/2022/Dec/23
- http://seclists.org/fulldisclosure/2022/Dec/26
- http://seclists.org/fulldisclosure/2022/Dec/28
- http://www.openwall.com/lists/oss-security/2022/12/26/1
- https://security.gentoo.org/glsa/202305-32
- https://support.apple.com/en-us/HT213516
- https://support.apple.com/en-us/HT213531
- https://support.apple.com/en-us/HT213532
- https://support.apple.com/en-us/HT213535
- https://support.apple.com/en-us/HT213537
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-42856
Data: NIST NVD + CISA KEV. NVD last modified 2025-10-23. Always verify against the vendor advisory before acting.