CVE-2025-41086
BaseFortify
Publication date: 2025-12-02
Last updated on: 2026-02-03
Assigner: Spanish National Cybersecurity Institute, S.A. (INCIBE)
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| gams | gams | 51.1.0 |
| gams | gams | 51.2.0 |
| gams | gams | 49.6.0 |
| gams | gams | From 49.1.0 (inc) to 49.7.0 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-639 | The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in the access control system of the GAMS licensing system. It allows an attacker to generate unlimited valid licenses by exploiting an insecure checksum algorithm used by the license validator. By knowing the checksum algorithm and the license format, the attacker can recalculate the checksum and create valid licenses, granting themselves full privileges without needing credentials or source code access. This results in unrestricted access to GAMS's mathematical models and commercial solvers.
How can this vulnerability impact me? :
The vulnerability can impact you by allowing unauthorized users to bypass licensing restrictions and gain full access to GAMS software features without proper authorization. This could lead to unauthorized use of the software, potential financial loss due to license evasion, and exposure of proprietary mathematical models and commercial solvers.