CVE-2022-42856
Apple iOS Type Confusion Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 4 January 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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..
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 8.52% probability · 95th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 14 December 2022 · due 4 January 2023
- Weakness
- CWE-843
- Affected
- apple/safari · apple/ipados · apple/iphone os · apple/macos · apple/tvos
- Source
- product-security@apple.com
EPSS 8.5% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply updates per vendor instructions. https://support.apple.com/en-us/HT213516; https://nvd.nist.gov/vuln/detail/CVE-2022-42856
References
- http://seclists.org/fulldisclosure/2022/Dec/21Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2022/Dec/22Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2022/Dec/23Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2022/Dec/26Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2022/Dec/28Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2022/12/26/1Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202305-32Third Party Advisory
- https://support.apple.com/en-us/HT213516Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT213531Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT213532Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT213535Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT213537Release Notes, Vendor Advisory
- http://seclists.org/fulldisclosure/2022/Dec/21Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2022/Dec/22Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2022/Dec/23Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2022/Dec/26Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2022/Dec/28Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2022/12/26/1Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202305-32Third Party Advisory
- https://support.apple.com/en-us/HT213516Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT213531Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT213532Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT213535Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT213537Release Notes, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-42856US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.