FO
Product
FOS-Onboard
2
CVEs
0
On KEV
9.1
Max CVSS
0
New 30D
VulnerabilityCritical
Wärtsilä FOS-Onboard
View CSAF
Summary
Successful exploitation of these vulnerabilities could allow an attacker to deliver an unauthorized update, execute code, or extract credentials to allow the attacker to impersonate a privileged client.
The following versions of Wärtsilä FOS-Onboard are affected:
FOS-Onboard 5.07.0923.01 (CVE-2026-78225, CVE-2026-81855)
CVSS
Vendor
Equipment
Vulnerabilities
v3 9.1
Wärtsilä
Wärtsilä FOS-Onboard
Use of Hard-coded Cryptographic Key
Background
Critical Infrastructure Sectors: Transportation Systems
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Finland
Vulnerabilities
Expand All +
CVE-2026-78225
A hardcoded cryptographic server key vulnerability exists in the deployer-ng Update Controller component of Wärtsilä FOS-Onboard.
View CVE Details
Affected Products
Wärtsilä FOS-Onboard
Vendor: Wärtsilä
Product Version: Wärtsilä FOS-Onboard: 5.07.0923.01
Product Status: known_affected
Remediations
Mitigation Wärtsilä 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 Wärtsilä to obtain and install the patch. To obtain and install the latest patch, contact Wärtsilä: https://www.wartsila.com/services-catalogue/engine-services-4-stroke/wartsila-ics-patch-deployment#contact
Relevant CWE: CWE-321 Use...
Sep 15, 2026·CISA Advisories
