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        "cveId": "CVE-2022-41648",
        "assignerOrgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
        "assignerShortName": "icscert",
        "datePublished": "2022-10-28T17:09:41.162Z",
        "dateUpdated": "2025-10-13T12:09:37.939Z",
        "dateReserved": "2022-09-29T00:00:00.000Z"
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                    "defaultStatus": "unaffected",
                    "product": "HEIDENHAIN Controller TNC 640 NC Software",
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                    "versions": [
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                            "status": "affected",
                            "version": "340590 07 SP5"
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                    "lang": "en",
                    "type": "reporter",
                    "value": "Marco Balduzzi"
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                            "value": "<span style=\"background-color: rgb(255, 255, 255);\">The HEIDENHAIN Controller TNC 640 NC software Version 340590 07 SP5, is vulnerable to improper authentication in its DNC communication for CNC machines. Authentication is not enabled by default for DNC communication. This vulnerability may allow an attacker to deny service on the production line, steal sensitive data from the production line, and alter any products created by the production line. Note: CNC machines running the TNC 640 controller require DNC to be enabled for DNC communication to be present.</span><br>"
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                        "Recovery": "NOT_DEFINED",
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                        "attackComplexity": "HIGH",
                        "attackRequirements": "NONE",
                        "attackVector": "NETWORK",
                        "baseScore": 9.2,
                        "baseSeverity": "CRITICAL",
                        "privilegesRequired": "NONE",
                        "providerUrgency": "NOT_DEFINED",
                        "subAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "userInteraction": "NONE",
                        "valueDensity": "NOT_DEFINED",
                        "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                        "version": "4.0",
                        "vulnAvailabilityImpact": "HIGH",
                        "vulnConfidentialityImpact": "HIGH",
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                            "value": "GENERAL"
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                        {
                            "cweId": "CWE-1188",
                            "description": "CWE-1188 Insecure Default Initialization of Resource",
                            "lang": "en",
                            "type": "CWE"
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                "shortName": "icscert",
                "dateUpdated": "2025-10-13T12:09:37.939Z"
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                    "tags": [
                        "government-resource"
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                    "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-22-298-02"
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                            "value": "<p>HEIDENHAIN has identified the following specific workarounds and mitigations users can apply to reduce risk:</p><ul><li>Block LSV2 and DNC communication using the integrated firewall in the controller's operating system.</li><li>Use zone firewalls to isolate and segment the network of the affected devices.</li><li>Ask your machinery vendor (running HEIDENHAIN controllers) for updates to a recent software version, where SSH tunneling is standard.</li></ul>\n\n<br>"
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            "source": {
                "discovery": "UNKNOWN"
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                            "value": "<p>HEIDENHAIN has identified the following specific workarounds and mitigations users can apply to reduce risk:</p><ul><li>Block LSV2 and DNC communication using the integrated firewall in the controller's operating system.</li><li>Use zone firewalls to isolate and segment the network of the affected devices.</li><li>Ask machinery vendor (running HEIDENHAIN controllers) for updates to a recent software version, where SSH tunneling is standard.</li></ul>"
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                    ],
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                }
            ],
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                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://www.cisa.gov/uscert/ics/advisories/icsa-22-298-02",
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                            "type": "ssvc",
                            "content": {
                                "timestamp": "2025-04-16T17:26:17.515984Z",
                                "id": "CVE-2022-41648",
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