{
    "containers": {
        "cna": {
            "affected": [
                {
                    "product": "SIMATIC HMI Comfort Outdoor Panels V15 7\\\" & 15\\\" (incl. SIPLUS variants)",
                    "vendor": "Siemens",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "All versions < V15.1 Update 6"
                        }
                    ]
                },
                {
                    "product": "SIMATIC HMI Comfort Outdoor Panels V16 7\\\" & 15\\\" (incl. SIPLUS variants)",
                    "vendor": "Siemens",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "All versions < V16 Update 4"
                        }
                    ]
                },
                {
                    "product": "SIMATIC HMI Comfort Panels V15 4\\\" - 22\\\" (incl. SIPLUS variants)",
                    "vendor": "Siemens",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "All versions < V15.1 Update 6"
                        }
                    ]
                },
                {
                    "product": "SIMATIC HMI Comfort Panels V16 4\\\" - 22\\\" (incl. SIPLUS variants)",
                    "vendor": "Siemens",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "All versions < V16 Update 4"
                        }
                    ]
                },
                {
                    "product": "SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F",
                    "vendor": "Siemens",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "All versions < V15.1 Update 6"
                        }
                    ]
                },
                {
                    "product": "SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F",
                    "vendor": "Siemens",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "All versions < V16 Update 4"
                        }
                    ]
                },
                {
                    "product": "SIMATIC WinCC Runtime Advanced V15",
                    "vendor": "Siemens",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "All versions < V15.1 Update 6"
                        }
                    ]
                },
                {
                    "product": "SIMATIC WinCC Runtime Advanced V16",
                    "vendor": "Siemens",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "All versions < V16 Update 4"
                        }
                    ]
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\\\" & 15\\\" (incl. SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Outdoor Panels V16 7\\\" & 15\\\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI Comfort Panels V15 4\\\" - 22\\\" (incl. SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Panels V16 4\\\" - 22\\\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V15.1 Update 6), SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V16 Update 4), SIMATIC WinCC Runtime Advanced V15 (All versions < V15.1 Update 6), SIMATIC WinCC Runtime Advanced V16 (All versions < V16 Update 4). SmartVNC has an out-of-bounds memory access vulnerability that could be triggered on the server side when sending data from the client, which could result in a Denial-of-Service condition."
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-788",
                            "description": "CWE-788: Access of Memory Location After End of Buffer",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "dateUpdated": "2021-10-12T09:49:11.000Z",
                "orgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
                "shortName": "siemens"
            },
            "references": [
                {
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-538778.pdf"
                }
            ],
            "x_legacyV4Record": {
                "CVE_data_meta": {
                    "ASSIGNER": "productcert@siemens.com",
                    "ID": "CVE-2021-25660",
                    "STATE": "PUBLIC"
                },
                "affects": {
                    "vendor": {
                        "vendor_data": [
                            {
                                "product": {
                                    "product_data": [
                                        {
                                            "product_name": "SIMATIC HMI Comfort Outdoor Panels V15 7\\\" & 15\\\" (incl. SIPLUS variants)",
                                            "version": {
                                                "version_data": [
                                                    {
                                                        "version_value": "All versions < V15.1 Update 6"
                                                    }
                                                ]
                                            }
                                        },
                                        {
                                            "product_name": "SIMATIC HMI Comfort Outdoor Panels V16 7\\\" & 15\\\" (incl. SIPLUS variants)",
                                            "version": {
                                                "version_data": [
                                                    {
                                                        "version_value": "All versions < V16 Update 4"
                                                    }
                                                ]
                                            }
                                        },
                                        {
                                            "product_name": "SIMATIC HMI Comfort Panels V15 4\\\" - 22\\\" (incl. SIPLUS variants)",
                                            "version": {
                                                "version_data": [
                                                    {
                                                        "version_value": "All versions < V15.1 Update 6"
                                                    }
                                                ]
                                            }
                                        },
                                        {
                                            "product_name": "SIMATIC HMI Comfort Panels V16 4\\\" - 22\\\" (incl. SIPLUS variants)",
                                            "version": {
                                                "version_data": [
                                                    {
                                                        "version_value": "All versions < V16 Update 4"
                                                    }
                                                ]
                                            }
                                        },
                                        {
                                            "product_name": "SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F",
                                            "version": {
                                                "version_data": [
                                                    {
                                                        "version_value": "All versions < V15.1 Update 6"
                                                    }
                                                ]
                                            }
                                        },
                                        {
                                            "product_name": "SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F",
                                            "version": {
                                                "version_data": [
                                                    {
                                                        "version_value": "All versions < V16 Update 4"
                                                    }
                                                ]
                                            }
                                        },
                                        {
                                            "product_name": "SIMATIC WinCC Runtime Advanced V15",
                                            "version": {
                                                "version_data": [
                                                    {
                                                        "version_value": "All versions < V15.1 Update 6"
                                                    }
                                                ]
                                            }
                                        },
                                        {
                                            "product_name": "SIMATIC WinCC Runtime Advanced V16",
                                            "version": {
                                                "version_data": [
                                                    {
                                                        "version_value": "All versions < V16 Update 4"
                                                    }
                                                ]
                                            }
                                        }
                                    ]
                                },
                                "vendor_name": "Siemens"
                            }
                        ]
                    }
                },
                "data_format": "MITRE",
                "data_type": "CVE",
                "data_version": "4.0",
                "description": {
                    "description_data": [
                        {
                            "lang": "eng",
                            "value": "A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\\\" & 15\\\" (incl. SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Outdoor Panels V16 7\\\" & 15\\\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI Comfort Panels V15 4\\\" - 22\\\" (incl. SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Panels V16 4\\\" - 22\\\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V15.1 Update 6), SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V16 Update 4), SIMATIC WinCC Runtime Advanced V15 (All versions < V15.1 Update 6), SIMATIC WinCC Runtime Advanced V16 (All versions < V16 Update 4). SmartVNC has an out-of-bounds memory access vulnerability that could be triggered on the server side when sending data from the client, which could result in a Denial-of-Service condition."
                        }
                    ]
                },
                "problemtype": {
                    "problemtype_data": [
                        {
                            "description": [
                                {
                                    "lang": "eng",
                                    "value": "CWE-788: Access of Memory Location After End of Buffer"
                                }
                            ]
                        }
                    ]
                },
                "references": {
                    "reference_data": [
                        {
                            "name": "https://cert-portal.siemens.com/productcert/pdf/ssa-538778.pdf",
                            "refsource": "MISC",
                            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-538778.pdf"
                        }
                    ]
                }
            }
        },
        "adp": [
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-03T20:11:27.734Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "tags": [
                            "x_refsource_MISC",
                            "x_transferred"
                        ],
                        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-538778.pdf"
                    }
                ]
            },
            {
                "metrics": [
                    {
                        "cvssV3_1": {
                            "scope": "UNCHANGED",
                            "version": "3.1",
                            "baseScore": 7.5,
                            "attackVector": "NETWORK",
                            "baseSeverity": "HIGH",
                            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                            "integrityImpact": "NONE",
                            "userInteraction": "NONE",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "HIGH",
                            "privilegesRequired": "NONE",
                            "confidentialityImpact": "NONE"
                        }
                    },
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-06-02T19:23:33.922249Z",
                                "id": "CVE-2021-25660",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "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": "2026-06-02T19:23:44.242Z"
                }
            }
        ]
    },
    "cveMetadata": {
        "assignerOrgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
        "assignerShortName": "siemens",
        "cveId": "CVE-2021-25660",
        "datePublished": "2021-05-12T13:18:22.000Z",
        "dateReserved": "2021-01-21T00:00:00.000Z",
        "dateUpdated": "2026-06-02T19:23:44.242Z",
        "state": "PUBLISHED"
    },
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2"
}