Auth bypass in Frangoteam Fuxa

CVE-2026-25939

FUXA is a web-based Process Visualization (SCADA/HMI/Dashboard) software. From 1.2.8 through version 1.2.10, an authorization bypass vulnerability in the FUXA allows an unauthenticated, remote attacker to create and modify arbitrary schedulers, exposing connected ICS/SCADA environments to follow-on actions. This has been patched in FUXA version 1.2.11.

Vulnerability class: Broken Access Control

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (56.8th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 56.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-25939: fell from 0.113 to 0.009.

EPSS over last 30 days · oldest: 0.113 · newest: 0.009 · change: -0.104

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2026-25939?
CVE-2026-25939 is a critical-severity vulnerability in Frangoteam Fuxa, classified under Missing Authorization. CVSS score: 9.1/10. Published 2026-02-09.
How severe is CVE-2026-25939?
Critical severity. CVSS v3 base score is 9.1 out of 10.
Is CVE-2026-25939 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.