Is CVE-2022-42856 being actively exploited?

Yes. CVE-2022-42856 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added on December 14, 2022.

What is the CVSS score for CVE-2022-42856?

CVE-2022-42856 has a CVSS 3.1 base score of 8.8 (HIGH).

CVE-2022-42856

HIGH · CVSS 8.8CISA KEV: actively exploitedEPSS 8.5%EU EUVD: exploited

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..

Key facts

CVSS score: 8.8 (v3.1)
Severity: HIGH
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-843
EPSS score: 8.5% (95th percentile)
In CISA KEV: Yes, added December 14, 2022
In EU EUVD: Yes (EUVD-2022-45919)
Published: December 15, 2022
NVD last modified: June 17, 2026
Status: Analyzed

CISA Known Exploited Vulnerability

Apple iOS Type Confusion Vulnerability

Added to the KEV catalog on December 14, 2022; federal remediation due January 4, 2023.

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2022-45919 in the EU Vulnerability Database. ENISA flags it as known exploited. Last updated in EUVD on October 21, 2025.

View on the EU Vulnerability Database

Affected products

apple / ipados
apple / iphone os
apple / macos
apple / safari
apple / tvos

Certified products that may be affected

14 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

Strong Customer Authentication pour Apple Pay sur Mac mini avec M1 et Magic keyboard avec Touch ID, exécutant macOS Monterey 12.3.1 (Version 12.3.1 (build 21E258)) - Apple Inc. - Common Criteria ANSSI-CC-2023/19 - active
Strong Customer Authentication pour Apple Pay sur MacBook Air 2020 avec M1 exécutant macOS Monterey 12.3.1 (Version 12.3.1 (build 21E258)) - Apple Inc. - Common Criteria ANSSI-CC-2023/16 - active
Strong Customer Authentication pour Apple Pay sur iPhone SE (2nde génération) avec A13 Bionic exécutant iOS 15.4.1 (Version 15.4.1 (build 19E258)) - Apple Inc. - Common Criteria ANSSI-CC-2023/15 - active
Strong Customer Authentication pour Apple Pay sur iPhone 13 avec A15 Bionic exécutant iOS 15.4.1 Version 15.4.1 (build 19E258) - Apple Inc. - Common Criteria ANSSI-CC-2023/18 - active
Strong Customer Authentication pour Apple Pay, sur MacBook Air 2020 avec M1 exécutant macOS Big Sur 11.3.1 - Apple Inc. - Common Criteria ANSSI-CC-2022/44 - active

See all 14 in the Security Certifications Explorer.

References

http://seclists.org/fulldisclosure/2022/Dec/21(Mailing List, Third Party Advisory)
http://seclists.org/fulldisclosure/2022/Dec/22(Mailing List, Third Party Advisory)
http://seclists.org/fulldisclosure/2022/Dec/23(Mailing List, Third Party Advisory)
http://seclists.org/fulldisclosure/2022/Dec/26(Mailing List, Third Party Advisory)
http://seclists.org/fulldisclosure/2022/Dec/28(Mailing List, Third Party Advisory)
http://www.openwall.com/lists/oss-security/2022/12/26/1(Mailing List, Third Party Advisory)
https://security.gentoo.org/glsa/202305-32(Third Party Advisory)
https://support.apple.com/en-us/HT213516(Release Notes, Vendor Advisory)
https://support.apple.com/en-us/HT213531(Release Notes, Vendor Advisory)
https://support.apple.com/en-us/HT213532(Release Notes, Vendor Advisory)
https://support.apple.com/en-us/HT213535(Release Notes, Vendor Advisory)
https://support.apple.com/en-us/HT213537(Release Notes, Vendor Advisory)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-42856(US Government Resource)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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