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    2 vulnerabilities found for GAMS by AMS Development Corp.

    CVE-2025-41086 (GCVE-0-2025-41086)

    Vulnerability from nvd – Published: 2025-12-02 13:22 – Updated: 2025-12-02 14:24
    VLAI
    Title
    Authorization bypass in GAMS from GAMS Development Corp.
    Summary
    Vulnerability in the access control system of the GAMS licensing system that allows unlimited valid licenses to be generated, bypassing any usage restrictions. The validator uses an insecure checksum algorithm; knowing this algorithm and the format of the license lines, an attacker can recalculate the checksum and generate a valid license to grant themselves full privileges without credentials or access to the source code, allowing them unrestricted access to GAMS's mathematical models and commercial solvers.
    Severity
    6.9 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-639 - Authorization Bypass Through User-Controlled Key
    Assigner
    References
    Impacted products
    Vendor Product Version
    AMS Development Corp. GAMS Affected: 0 , ≤ 49.6.0 (custom)
    		Create a notification for this product.
    Date Public
    2025-11-28 11:00
    Credits
    Juan Embid Sánchez Francisco Guerrero Gallardo
    Show details on NVD website
    To clipboard 

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    CVE-2025-41086 (GCVE-0-2025-41086)

    Vulnerability from cvelistv5 – Published: 2025-12-02 13:22 – Updated: 2025-12-02 14:24
    VLAI
    Title
    Authorization bypass in GAMS from GAMS Development Corp.
    Summary
    Vulnerability in the access control system of the GAMS licensing system that allows unlimited valid licenses to be generated, bypassing any usage restrictions. The validator uses an insecure checksum algorithm; knowing this algorithm and the format of the license lines, an attacker can recalculate the checksum and generate a valid license to grant themselves full privileges without credentials or access to the source code, allowing them unrestricted access to GAMS's mathematical models and commercial solvers.
    Severity
    6.9 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-639 - Authorization Bypass Through User-Controlled Key
    Assigner
    References
    Impacted products
    Vendor Product Version
    AMS Development Corp. GAMS Affected: 0 , ≤ 49.6.0 (custom)
    		Create a notification for this product.
    Date Public
    2025-11-28 11:00
    Credits
    Juan Embid Sánchez Francisco Guerrero Gallardo
    Show details on NVD website
    To clipboard 

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