{"id":"CVE-2026-81855","title":"A hardcoded cryptographic client authentication key vulnerability exists in the robot testing framework component of Wärtsilä FOS-Onboard.","summary":"A hardcoded cryptographic client authentication key vulnerability exists in the robot testing framework component of Wärtsilä FOS-Onboard.","severity":"critical","cvss":9.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","cwe":["CWE-321"],"vendor":"Wärtsilä","product":"FOS-Onboard","affected":["FOS-Onboard 5.07.0923.01"],"published":"2026-09-15","updated":"2026-09-24","sourceUpdated":"2026-09-24T22:17:01.880","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-81855","references":[{"url":"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-258-02.json","label":"ics-cert@hq.dhs.gov"},{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-26-258-02","label":"ics-cert@hq.dhs.gov"},{"url":"https://www.wartsila.com/marine/products/data-service-downloads/fos-downloads","label":"ics-cert@hq.dhs.gov"},{"url":"https://www.wartsila.com/services-catalogue/engine-services-4-stroke/wartsila-ics-patch-deployment#contact","label":"ics-cert@hq.dhs.gov"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-09-16T18:05:39.334843Z"},"epss":0.00589,"epssPercentile":0.45823,"ingestedAt":"2026-09-15T21:44:50.656Z","slug":"CVE-2026-81855","body":"## Overview\n\nA hardcoded cryptographic client authentication key vulnerability exists in the robot testing framework component of Wärtsilä FOS-Onboard.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":50,"depthScoreParts":{"impact":50.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}