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vuln-cve/data/2026/12xxx/CVE-2026-12496.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-12496",
"assignerOrgId": "455daabc-a392-441d-aa46-37d35189897c",
"state": "PUBLISHED",
"assignerShortName": "NCSC.ch",
"dateReserved": "2026-06-17T08:57:07.049Z",
"datePublished": "2026-07-24T13:57:24.818Z",
"dateUpdated": "2026-07-24T15:01:17.030Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "455daabc-a392-441d-aa46-37d35189897c",
"shortName": "NCSC.ch",
"dateUpdated": "2026-07-24T13:57:24.818Z"
},
"title": "Loytec LINX firmware: Unauthenticated stored XSS in OPC XML-DA server",
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"cweId": "CWE-79",
"description": "CWE-79 Improper neutralization of input during web page generation ('cross-site scripting')",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"lang": "en",
"cweId": "CWE-116",
"description": "CWE-116 Improper encoding or escaping of output",
"type": "CWE"
}
]
}
],
"impacts": [
{
"capecId": "CAPEC-592",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-592 Stored XSS"
}
]
}
],
"affected": [
{
"vendor": "Loytec",
"product": "LIP-ME20xC",
"versions": [
{
"status": "affected",
"version": "0",
"lessThanOrEqual": "8.4.16",
"versionType": "custom"
}
],
"defaultStatus": "unaffected"
},
{
"vendor": "Loytec",
"product": "L-INX",
"versions": [
{
"status": "affected",
"version": "0",
"lessThanOrEqual": "8.4.16",
"versionType": "custom"
}
],
"defaultStatus": "unaffected"
},
{
"vendor": "Loytec",
"product": "L-GATE",
"versions": [
{
"status": "affected",
"version": "0",
"lessThanOrEqual": "8.4.16",
"versionType": "custom"
}
],
"defaultStatus": "unaffected"
},
{
"vendor": "Loytec",
"product": "L-ROC",
"versions": [
{
"status": "affected",
"version": "0",
"lessThanOrEqual": "8.4.16",
"versionType": "custom"
}
],
"defaultStatus": "unaffected"
},
{
"vendor": "Loytec",
"product": "L-IOB",
"versions": [
{
"status": "affected",
"version": "0",
"lessThanOrEqual": "8.4.16",
"versionType": "custom"
}
],
"defaultStatus": "unaffected"
},
{
"vendor": "Loytec",
"product": "L-DALI",
"versions": [
{
"status": "affected",
"version": "0",
"lessThanOrEqual": "8.4.16",
"versionType": "custom"
}
],
"defaultStatus": "unaffected"
},
{
"vendor": "Loytec",
"product": "L-VIS",
"versions": [
{
"status": "affected",
"version": "0",
"lessThanOrEqual": "8.4.16",
"versionType": "custom"
}
],
"defaultStatus": "unaffected"
},
{
"vendor": "Loytec",
"product": "L-PAD",
"versions": [
{
"status": "affected",
"version": "0",
"lessThanOrEqual": "8.4.16",
"versionType": "custom"
}
],
"defaultStatus": "unaffected"
}
],
"descriptions": [
{
"lang": "en",
"value": "Stored Cross-Site Scripting (CWE-79) in the OPC XML-DA server statistics in Loytec LIP-ME201C, L-INX, L-GATE, L-ROC, L-IOB, L-DALI, L-VIS and L-PAD through 8.4.16 on LINX-A64 allows an unauthenticated remote attacker to execute arbitrary JavaScript in an administrator's browser (session hijacking, credential theft, device reconfiguration) via a crafted `User-Agent` header in a `POST /da` request.",
"supportingMedia": [
{
"type": "text/html",
"base64": false,
"value": "Stored Cross-Site Scripting (CWE-79)&nbsp;in the OPC XML-DA server statistics in Loytec LIP-ME201C,&nbsp;L-INX, L-GATE, L-ROC, L-IOB, L-DALI, L-VIS and L-PAD through 8.4.16 on LINX-A64 allows an unauthenticated remote attacker to execute arbitrary JavaScript in an administrator's browser (session hijacking, credential theft, device reconfiguration) via a crafted `User-Agent` header in a `POST /da` request.<br>"
}
]
}
],
"references": [
{
"url": "https://www.loytec.com/support/product-security/advisories/8522-dibt-cve-20260526-0004-unauthenticated-stored-xxs-in-opc-xml-da-server-statistics-high",
"tags": [
"vendor-advisory"
]
}
],
"metrics": [
{
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
],
"cvssV4_0": {
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "NONE",
"userInteraction": "PASSIVE",
"vulnConfidentialityImpact": "HIGH",
"subConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "HIGH",
"subIntegrityImpact": "NONE",
"vulnAvailabilityImpact": "HIGH",
"subAvailabilityImpact": "NONE",
"exploitMaturity": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"valueDensity": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED",
"version": "4.0",
"baseSeverity": "HIGH",
"baseScore": 8.7,
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
}
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to firmware version 8.4.18.",
"supportingMedia": [
{
"type": "text/html",
"base64": false,
"value": "Upgrade to firmware version 8.4.18."
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Daniel Hulliger, armasuisse CYD Campus",
"type": "finder"
},
{
"lang": "en",
"value": "Damian Pfammatter, armasuisse CYD Campus",
"type": "finder"
}
],
"source": {
"discovery": "EXTERNAL"
},
"x_generator": {
"engine": "Vulnogram 1.0.2"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-07-24T15:01:05.617837Z",
"id": "CVE-2026-12496",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-07-24T15:01:17.030Z"
}
}
]
}
}