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    CVE-2022-42856

    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..

    Published:Dec 14, 2022
    Last Modified:Oct 23, 2025
    EPS:Dec 15, 2022
    EPSS Score:0.00251
    CVSS Score:8.8

    CISA Notification

    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..

    Required Action:

    Apply updates per vendor instructions.

    Notes:

    No extra notes provided.

    Due Date
    Jan 4, 2023
    1346 days ago
    Alert Date
    Dec 14, 2022
    1367 days ago

    Affected Products

    Vendor
    Apple
    Product
    Ipados
    Vendor
    Apple
    Product
    Iphone Os
    Vendor
    Apple
    Product
    Macos
    Vendor
    Apple
    Product
    Safari
    Vendor
    Apple
    Product
    Tvos
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Els

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-65367 (CVSS 5.5) — A null pointer dereference was addressed with improved input validation. This issue is fixed in iOS 18.7.9 and…
    CVE-2026-43670 (CVSS 8.8) — A Content Security Policy bypass was addressed with improved enforcement in AudioWorklet contexts. This issue …
    CVE-2026-65331 (CVSS 4.3) — This issue was addressed through improved state management. This issue is fixed in Safari 26.6.1, iOS 18.7.10 …
    CVE-2026-64760 (CVSS 5.5) — An information leakage was addressed with additional validation. This issue is fixed in iOS 18.7.10 and iPadOS…
    CVE-2026-43794 (CVSS 8.8) — A memory corruption issue was addressed with improved memory handling. This issue is fixed in Safari 26.6.1, i…
    CVE-2026-65346 (CVSS 8.8) — An integer overflow was addressed with improved input validation. This issue is fixed in iOS 26.6.1 and iPadOS…
    CVE-2026-65351 (CVSS 4.3) — This issue was addressed through improved state management. This issue is fixed in Safari 26.6.1, iOS 26.6.1 a…
    CVE-2026-64782 (CVSS 3.1) — A memory corruption vulnerability was addressed with improved locking. This issue is fixed in Safari 26.6.1, i…
    CVE-2026-65347 (CVSS 6.5) — The issue was addressed with improved checks. This issue is fixed in iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe…
    CVE-2026-43795 (CVSS 4.3) — The issue was addressed with improved memory handling. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and i…

    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
    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

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High