---
id: CVE-2026-78225
title: >-
  A hardcoded cryptographic server key vulnerability exists in the deployer-ng
  Update Controller component of Wärtsilä FOS-Onboard.
summary: >-
  A hardcoded cryptographic server key vulnerability exists in the deployer-ng
  Update Controller component of Wärtsilä FOS-Onboard.
severity: critical
cvss: 9
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-321
vendor: Wärtsilä
product: FOS-Onboard
affected:
  - FOS-Onboard 5.07.0923.01
published: '2026-09-15'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T22:17:01.720'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-78225'
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: 'no'
  technicalImpact: total
  timestamp: '2026-09-16T18:05:08.299979Z'
epss: 0.00508
epssPercentile: 0.40904
ingestedAt: '2026-09-15T21:44:50.657Z'
---

## Overview

A hardcoded cryptographic server key vulnerability exists in the deployer-ng Update Controller component of Wärtsilä FOS-Onboard.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.