CVE-2022-42856

Name: CVE-2022-42856
Creator: NVD / NIST
Published: 2022-12-15T19:15:25.123+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10Actively ExploitedEPSS 8.52%

Last modified Jun 17, 2026

CVE-2022-42856 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. CISA has confirmed active exploitation in the wild. EPSS estimates a 8.52% chance of exploitation in the next 30 days.

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..

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

8.52%

94.4th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Jan 4, 2023.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Apple	Safari	< 16.2
Apple	Ipados	< 15.7.2
Apple	Iphone Os	< 15.7.2
Apple	Iphone Os	>= 16.0, < 16.1.2
Apple	Macos	< 13.1
Apple	Tvos	< 16.2

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

Timeline

Published: Dec 15, 2022
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2022-42856?

How severe is CVE-2022-42856?

CVE-2022-42856 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 8.52% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2022-42856?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-42856?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST