CVE-2021-1791

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    CVE-2021-1791

    Published: 2 Apr 2021Last Modified: 10 Mar 2026

    Summary:

    Details: An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4 and iPadOS 14.4. A malicious application may be able to disclose kernel memory.

    References: , https://support.apple.com/en-us/HT212146, https://support.apple.com/en-us/HT212147, https://support.apple.com/en-us/HT212148, https://support.apple.com/en-us/HT212149

    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-2021-1791 | CVE-DB