{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-81855", "assignerOrgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6", "state": "PUBLISHED", "assignerShortName": "icscert", "dateReserved": "2026-09-08T16:53:35.719Z", "datePublished": "2026-09-15T21:31:59.632Z", "dateUpdated": "2026-09-15T21:31:59.632Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6", "shortName": "icscert", "dateUpdated": "2026-09-15T21:31:59.632Z"}, "title": "W\u00e4rtsil\u00e4 FOS-Onboard Use of Hard-coded Cryptographic Key", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-321", "description": "CWE-321", "type": "CWE"}]}], "affected": [{"vendor": "W\u00e4rtsil\u00e4", "product": "FOS-Onboard", "versions": [{"status": "affected", "version": "5.07.0923.01"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "A hardcoded cryptographic client authentication key vulnerability exists in the robot testing framework component of W\u00e4rtsil\u00e4 FOS-Onboard.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "A hardcoded cryptographic client authentication key vulnerability exists in the robot testing framework component of W\u00e4rtsil\u00e4 FOS-Onboard."}]}], "references": [{"url": "https://www.wartsila.com/services-catalogue/engine-services-4-stroke/wartsila-ics-patch-deployment#contact"}, {"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-258-02"}, {"url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-258-02.json"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE", "baseSeverity": "CRITICAL", "baseScore": 9.1, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"}}, {"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "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": "CRITICAL", "baseScore": 9.3, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"}}], "solutions": [{"lang": "en", "value": "W\u00e4rtsil\u00e4 states that the vulnerabilities are not exploitable when the product is installed as recommended, and has developed a security patch. Users are also directed to contact W\u00e4rtsil\u00e4 to obtain and install the patch. To obtain and install the latest patch, contact W\u00e4rtsil\u00e4:\u00a0\n https://www.wartsila.com/services-catalogue/engine-services-4-stroke/wartsila-ics-patch-deployment#contact", "supportingMedia": [{"type": "text/html", "base64": false, "value": "W\u00e4rtsil\u00e4 states that the vulnerabilities are not exploitable when the product is installed as recommended, and has developed a security patch. Users are also directed to contact W\u00e4rtsil\u00e4 to obtain and install the patch. To obtain and install the latest patch, contact W\u00e4rtsil\u00e4:&nbsp;<br><a href=\"https://www.wartsila.com/services-catalogue/engine-services-4-stroke/wartsila-ics-patch-deployment#contact\">https://www.wartsila.com/services-catalogue/engine-services-4-stroke/wartsila-ics-patch-deployment#contact</a>"}]}], "credits": [{"lang": "en", "value": "Cydome Security Ltd reported this vulnerability to W\u00e4rtsil\u00e4 and CISA.", "type": "finder"}], "source": {"advisory": "ICSA-26-258-02", "discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.5"}}}}

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