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    4 vulnerabilities found for Nullsoft Scriptable Install System by Nullsoft

    CVE-2026-42171 (GCVE-0-2026-42171)

    Vulnerability from nvd – Published: 2026-04-24 21:20 – Updated: 2026-04-25 19:33
    VLAI
    Summary
    NSIS (Nullsoft Scriptable Install System) 3.06.1 before 3.12 sometimes uses the Low IL temp directory when executing as SYSTEM, allowing local attackers to gain privileges (if they can cause my_GetTempFileName to return 0, as shown in the references).
    Severity
    7.8 (High)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-427 - Uncontrolled Search Path Element
    Assigner
    References
    Impacted products
    Vendor Product Version
    Nullsoft Nullsoft Scriptable Install System Affected: 3.06.1 , < 3.12 (custom)
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2025-43715 (GCVE-0-2025-43715)

    Vulnerability from nvd – Published: 2025-04-17 00:00 – Updated: 2025-04-17 19:16
    VLAI
    Summary
    Nullsoft Scriptable Install System (NSIS) before 3.11 on Windows allows local users to escalate privileges to SYSTEM during an installation, because the temporary plugins directory is created under %WINDIR%\temp and unprivileged users can place a crafted executable file by winning a race condition. This occurs because EW_CREATEDIR does not always set the CreateRestrictedDirectory error flag.
    Severity
    8.1 (High)
    CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-754 - Improper Check for Unusual or Exceptional Conditions
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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    CVE-2026-42171 (GCVE-0-2026-42171)

    Vulnerability from cvelistv5 – Published: 2026-04-24 21:20 – Updated: 2026-04-25 19:33
    VLAI
    Summary
    NSIS (Nullsoft Scriptable Install System) 3.06.1 before 3.12 sometimes uses the Low IL temp directory when executing as SYSTEM, allowing local attackers to gain privileges (if they can cause my_GetTempFileName to return 0, as shown in the references).
    Severity
    7.8 (High)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-427 - Uncontrolled Search Path Element
    Assigner
    References
    Impacted products
    Vendor Product Version
    Nullsoft Nullsoft Scriptable Install System Affected: 3.06.1 , < 3.12 (custom)
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2025-43715 (GCVE-0-2025-43715)

    Vulnerability from cvelistv5 – Published: 2025-04-17 00:00 – Updated: 2025-04-17 19:16
    VLAI
    Summary
    Nullsoft Scriptable Install System (NSIS) before 3.11 on Windows allows local users to escalate privileges to SYSTEM during an installation, because the temporary plugins directory is created under %WINDIR%\temp and unprivileged users can place a crafted executable file by winning a race condition. This occurs because EW_CREATEDIR does not always set the CreateRestrictedDirectory error flag.
    Severity
    8.1 (High)
    CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-754 - Improper Check for Unusual or Exceptional Conditions
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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