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    CVE-2026-49413

    The Linuxulator determined whether a binary was set-user-ID or set-group-ID by checking the P_SUGID process flag. During execve(2), this flag is not yet set at the point where the auxiliary vector is constructed, so AT_SECURE was incorrectly set to zero for set-user-ID and set-group-ID executables. An unprivileged local user can inject a shared library via LD_PRELOAD into a set-user-ID or set-group-ID Linux binary, gaining the privileges of that binary.

    Published:Jun 27, 2026
    Last Modified:Jun 29, 2026
    EPS:Jun 27, 2026
    EPSS Score:0.00141
    CVSS Score:7.1

    Affected Products

    Vendor
    Freebsd
    Product
    Freebsd

    Exploits

    https://github.com/ii4gsp/CVE-2026-49413

    Common Weakness Enumeration

    CWE-266 Incorrect Privilege Assignment

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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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