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vuln-cve/data/2025/41xxx/CVE-2025-41086.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2025-41086",
"assignerOrgId": "0cbda920-cd7f-484a-8e76-bf7f4b7f4516",
"state": "PUBLISHED",
"assignerShortName": "INCIBE",
"dateReserved": "2025-04-16T09:09:36.724Z",
"datePublished": "2025-12-02T13:22:23.415Z",
"dateUpdated": "2025-12-02T14:24:21.854Z"
},
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "GAMS",
"vendor": "AMS Development Corp.",
"versions": [
{
"lessThanOrEqual": "49.6.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:ams_development_corp.:gams:*:*:*:*:*:*:*:*",
"versionEndIncluding": "49.6.0",
"versionStartIncluding": "0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Juan Embid Sánchez"
},
{
"lang": "en",
"type": "finder",
"value": "Francisco Guerrero Gallardo"
}
],
"datePublic": "2025-11-28T11:00:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "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."
}
],
"value": "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."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 6.9,
"baseSeverity": "MEDIUM",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "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",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "LOW",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-639",
"description": "CWE-639 Authorization Bypass Through User-Controlled Key",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"orgId": "0cbda920-cd7f-484a-8e76-bf7f4b7f4516",
"shortName": "INCIBE",
"dateUpdated": "2025-12-02T13:22:23.415Z"
},
"references": [
{
"url": "https://www.incibe.es/en/incibe-cert/notices/aviso/authorization-bypass-gams-gams-development-corp"
},
{
"tags": [
"patch",
"release-notes"
],
"url": "https://www.gams.com/latest/docs/RN_51.html"
}
],
"solutions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "The vulnerability has been fixed in GAMS version 51."
}
],
"value": "The vulnerability has been fixed in GAMS version 51."
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Authorization bypass in GAMS from GAMS Development Corp.",
"x_generator": {
"engine": "Vulnogram 0.5.0"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2025-12-02T14:24:13.177532Z",
"id": "CVE-2025-41086",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2025-12-02T14:24:21.854Z"
}
}
]
}
}