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    CVE-2026-107615

    An uncontrolled search path element vulnerability in GlavSoft TightVNC Server for Windows before 2.8.88 allows a local authenticated user to execute arbitrary code with SYSTEM privileges. DynamicLibrary::init() (and ThemeLib) load screenhooks32.dll / screenhooks64.dll with LoadLibrary() using a bare file name and no LOAD_LIBRARY_SEARCH_* flags, so the TightVNC service follows the default DLL search order and loads an attacker-planted DLL from a writable directory earlier in that order (for example, an installation directory with permissive ACLs).

    Published:Oct 8, 2026
    Last Modified:Oct 9, 2026
    EPS:Oct 8, 2026
    EPSS Score:
    CVSS Score:7.8

    Affected Products

    Vendor
    Glavsoft
    Product
    Tightvnc

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-427 Uncontrolled Search Path Element

    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