Vulnerability · Published Sep 15, 2026 · Assigned by icscert
CVE-2026-81855Wärtsilä FOS-Onboard Use of Hard-coded Cryptographic Key
Critical 9.1
In plain English
A critical-severity security flaw in FOS-Onboard from Wärtsilä. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities).
Severity (CVSS 3.1)9.1Critical
Exploit odds (30 days)0.6%top 51.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A hardcoded cryptographic client authentication key vulnerability exists in the robot testing framework component of Wärtsilä FOS-Onboard.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Wärtsilä | FOS-Onboard | 5.07.0923.01 |
Weakness: CWE-321 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N