How severe is CVE-2026-25939?

CVE-2026-25939 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2026-25939 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-25939?

CVE-2026-25939 affects Frangoteam Fuxa. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-25939?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-25939 have an EU (EUVD) identifier?

Yes. CVE-2026-25939 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6250.

When was CVE-2026-25939 published?

CVE-2026-25939 was published on 2026-02-09 and last updated on 2026-06-17.

CVE-2026-25939

CVE-2026-25939 is a critical-severity vulnerability in Frangoteam Fuxa with a CVSS 3.x base score of 9.1. Its EPSS exploit-prediction score of 11% places it in the 95th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-862.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v4: 9.3
EPSS exploit prediction: 11% (95th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-6250
Weakness: CWE-862
Affected product: Frangoteam Fuxa
Published: 2026-02-09
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-25939?: CVE-2026-25939 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2026-25939 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-25939?: CVE-2026-25939 affects Frangoteam Fuxa. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-25939?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-25939 have an EU (EUVD) identifier?: Yes. CVE-2026-25939 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6250.
When was CVE-2026-25939 published?: CVE-2026-25939 was published on 2026-02-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:frangoteam:fuxa:*:*:*:*:*:*:*:*

More vulnerabilities in Frangoteam Fuxa

CVE-2025-69985 — Critical (CVSS 9.8): FUXA 1.2.8 and prior contains an Authentication Bypass vulnerability leading to Remote Code Execution (RCE). The…
CVE-2026-25938 — Critical (CVSS 9.8): FUXA is a web-based Process Visualization (SCADA/HMI/Dashboard) software. From 1.2.8 through 1.2.10, an authentication…
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CVE-2026-25893 — Critical (CVSS 9.8): FUXA is a web-based Process Visualization (SCADA/HMI/Dashboard) software. Prior to 1.2.10, an authentication bypass…
CVE-2025-69983 — Critical (CVSS 9.8): FUXA v1.2.7 allows Remote Code Execution (RCE) via the project import functionality. The application does not properly…

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