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CVE-2025-41086— Authorization bypass in GAMS from GAMS Development Corp.

Quick assessment

Affected
AMS Development Corp. GAMS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

AMS Development GAMS是印度AMS Development公司的一个代数建模系统。 AMS Development GAMS存在安全漏洞，该漏洞源于校验和使用不安全算法，可能导致生成无限有效许可证。

AI Predicted 9.8 Difficulty: Easy EPSS 0.21% · P11
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I. Basic Information for CVE-2025-41086

Vulnerability Information
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Vulnerability Title
Authorization bypass in GAMS from GAMS Development Corp.
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
AMS Development GAMS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
AMS Development GAMS是印度AMS Development公司的一个代数建模系统。 AMS Development GAMS存在安全漏洞，该漏洞源于校验和使用不安全算法，可能导致生成无限有效许可证。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
AMS Development Corp. GAMS 0 ~ 49.6.0 -

II. Public POCs for CVE-2025-41086

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III. Intelligence Information for CVE-2025-41086

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Other References for CVE-2025-41086 (2)

IV. Related Vulnerabilities

Same weakness: CWE-639

V. Comments for CVE-2025-41086

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