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Wärtsilä security advisories

1 CISA ICS advisory for Wärtsilä in the last tracking window, 0 flagged as relevant to oil & gas. Newest first.

High 8.3 Update ICSA-26-258-02 · Sep 15, 2026 · Wärtsilä

Wärtsilä FOS-Onboard (Update A)

CISA reports 2 vulnerabilities in Wärtsilä FOS-Onboard. Weakness type: Use of Hard-coded Cryptographic Key. 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. Highest C…

What to do: Prioritize: Wärtsilä states that the vulnerabilities are not exploitable when the product is installed as recommended, and has developed a security patch. The patch (version 5.08.4052.01) can be found on the Wärtsilä FOS download site.