CVE-2026-25939FUXA Missing Authorization
FUXA Unauthenticated Remote Arbitrary Scheduler Write
Published Feb 10, 2026 · Updated Oct 28, 2026 · Also known as GHSA-c869-jx4c-q5fc
Key Facts
Patch immediately- CVE-2026-25939 is a critical-severity vulnerability (CVSS 9.3 v4) affecting FUXA (Frangoteam), fuxa-server (npm).
- It is exploited in the wild, listed in Industry KEV feed since Jun 12, 2026. No public exploit code is known.
- EPSS estimates a 24% probability of exploitation in the next 30 days.
- Fixed versions are available, including FUXA 1.2.11, fuxa-server 1.2.11.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Scores
CVSS v4
9.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/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
EPSS (30-day exploit likelihood)
24%
Higher than 97.8% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
53/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Jun 12, 2026
122 days after publication
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Exploited (KEV)
Public exploit code
0
Proof-of-concept links
In-the-wild evidence
5
Reports of active use
Advisories And Exploit References
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Jun 12, 2026 | n/a | Not reported |
Affected Products
3 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| FUXAFrangoteam | < 1.2.11 | 1.2.11 |
| fuxa-servernpm | >= 1.2.8 | 1.2.11 |
Patched Releases
FUXA
1.2.11
fuxa-server
1.2.11
Timeline
Publicly disclosed
Feb 10, 2026
Added to Industry KEV feed
Jun 12, 2026
Last updated
Oct 28, 2026
Weakness Type
- CWE-862 Missing Authorization
References
- advisorycve.org · CVERecord
- advisorynvd.nist.gov · CVE-2026-25939
- advisoryGHSA advisory
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
FUXA is a web-based Process Visualization (SCADA/HMI/Dashboard) software.
Affected: FUXA (Frangoteam) versions < 1.2.11; fuxa-server (npm) versions >= 1.2.8. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Jun 12, 2026.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including FUXA 1.2.11, fuxa-server 1.2.11.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2026-25939 On Your Attack Surface?
Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.
Request A Demo