{
    "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"
                }
            }
        ]
    }
}