Cydome’s maritime cyber research team has identified critical vulnerabilities in Wärtsilä FOS-Onboard version 5.07.0923.01. Wärtsilä’s Fleet Optimisation Solution (FOS) is a voyage and fleet operations software that Wärtsilä says is used on thousands of ships. CISA published the advisory as ICSA-26-258-XX covering CVE-2026-78225 and CVE-2026-81855, rated as critical vulnerabilities (CVSS v4 scores of 9.5 and ...