CVE-2025-41086

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.

CVSS

No CVSS.

References

Link	Resource
https://www.gams.com/latest/docs/RN_51.html
https://www.incibe.es/en/incibe-cert/notices/aviso/authorization-bypass-gams-gams-development-corp

Configurations

No configuration.

History

02 Dec 2025, 14:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-12-02 14:16

Updated : 2025-12-02 17:16

NVD link : CVE-2025-41086

Mitre link : CVE-2025-41086

CVE.ORG link : CVE-2025-41086

JSON object : View

Products Affected

No product.

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

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