Paper/Archive/CVE-2026-81855

CVE-2026-81855

Wärtsilä FOS-Onboard — Wärtsilä FOS-Onboard Use of Hard-coded Cryptographic Key

EPSS 0.6%CVSS 9.3

critical.is priorityof 100

38

CVSS 9.3 (CNA)9.3 / 10 × 3027.9 Not in CISA KEV+300.0 EPSS percentile 48.2.482 × 209.6 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

A hardcoded cryptographic client authentication key vulnerability exists in the robot testing framework component of Wärtsilä FOS-Onboard.

Affected

ProductAffectedFixed inSource

FOS-Onboard5.07.0923.015.08.4052.01CNA

Scores by source

icscert (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

icscert (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refwartsila.com/marine/products/data-service-downloads/fos-downloads refcisa.gov/news-events/ics-advisories/icsa-26-258-02 refgithub.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-258-02.json