CVE-2026-81855CWE-321

CVE-2026-81855

Critical · published September 16, 2026

CVSS v3.1
9.1
EPSS
1%
Percentile
47.5
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0
9.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00589 · 47.5th percentile
Weakness
CWE-321 · Use of Hard-coded Cryptographic Key
Published
2026-09-16T02:17Z
References (3)
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-258-02.json · [email protected]https://www.cisa.gov/news-events/ics-advisories/icsa-26-258-02 · [email protected]https://www.wartsila.com/marine/products/data-service-downloads/fos-downloads · [email protected]
EPSS history
Timeline
  • 17 SEP 03:32Z
    EPSS moved — → 0%
    epss
  • 15 SEP 21:31Z
    Wärtsilä FOS-Onboard Use of Hard-coded Cryptographic Key
    cvelistv5