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    CVE-2026-84543

    An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Connecting to a malicious SMB server may cause unexpected system termination or corrupt kernel memory.

    Published:Sep 14, 2026
    Last Modified:Sep 20, 2026
    EPS:Sep 14, 2026
    EPSS Score:0.00333
    CVSS Score:7.5

    Affected Products

    Vendor
    Apple
    Product
    Macos

    Exploits

    https://github.com/petermalone/CVE-2026-84543

    Common Weakness Enumeration

    CWE-125 Out-of-bounds Read

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

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    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