CVE-2021-30939

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    CVE-2021-30939

    Published: 24 Aug 2021Last Modified: 10 Mar 2026

    Summary:

    Details: An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.6.2, tvOS 15.2, macOS Monterey 12.1, Security Update 2021-008 Catalina, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing a maliciously crafted image may lead to arbitrary code execution.

    References: https://support.apple.com/en-us/HT212975, https://support.apple.com/en-us/HT212976, https://support.apple.com/en-us/HT212978, https://support.apple.com/en-us/HT212980, https://support.apple.com/en-us/HT212981, https://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1414, https://support.apple.com/en-us/HT212979, , https://www.zerodayinitiative.com/advisories/ZDI-22-359/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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
    CVE-2021-30939 | CVE-DB