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Fencer Vulns
critical 9.0

CVE-2026-78225 json

Wärtsilä FOS-Onboard Use of Hard-coded Cryptographic Key

published 2026-09-15 54 d ago modified 2026-09-24 45 d ago also EUVD-2026-80010

cvss
9.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 43%
public exploits
0
none known

Summary

A hardcoded cryptographic server key vulnerability exists in the deployer-ng Update Controller component of Wärtsilä FOS-Onboard.

Patch / fix

  • Wärtsilä FOS-Onboard 5.08.4052.01

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-26-258-02 updated cvss 8.3

Wärtsilä FOS-Onboard (Update A)

  • Wärtsilä FOS-Onboard 5.07.0923.01
    affected: mitigation wartsila.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
53 d ago

Exploit prediction

0.51% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
CNA 4.0 9.5 CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CNA 4.0 9.5 CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • Wärtsilä FOS-Onboard

Classification

Weakness
  • CWE-321 Use of Hard-coded Cryptographic Key

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.