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Critical 9.1Published Sep 15, 2026
CVE-2026-81855Wärtsilä FOS-Onboard Use of Hard-coded Cryptographic Key
Updated under an hour ago ()
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It affects Wärtsilä FOS-Onboard. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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A hardcoded cryptographic client authentication key vulnerability exists in the robot testing framework component of Wärtsilä FOS-Onboard.
- CVSS
- 9.1 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- Weakness (CWE)
- CWE-321
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- icscert
- NVD analysis
- Deferred
- Record last updated
- Sep 24, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Wärtsilä FOS-Onboard wartsila:fos_onboard (from the name) | 5.07.0923.01; 5.08.4052.01 not affected | CNA record |
References
- https://www.wartsila.com/marine/products/data-service-downloads/fos-downloads
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-258-02
- https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-258-02.json
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.