CVE-2026-25895: FUXA Unauthenticated Remote Code Execution via Arbitrary File Write in Upload API
Summary Description A path traversal vulnerability in FUXA allows an unauthenticated, remote attacker to write arbitrary files to arbitrary locations on the server filesystem. This affects FUXA through version 1.2.9. This issue has been patched in FUXA version 1.2.10.
Impact This affects all deployments, including those with runtime.settings.secureEnabled set to true.
Exploitation allows an unauthenticated, remote attacker to overwrite application and system files. If the attacker can overwrite application code, startup scripts, or configuration files that are later executed/loaded, RCE is likely. Depending on deployment configuration and permissions, this may lead to full system compromise and could further expose connected ICS/SCADA environments to follow-on actions.
Patches This issue has been patched in FUXA version 1.2.10. Users are strongly encouraged to update to the latest available release.
Notes GitHub stated this vulnerability is identical to CVE-2025-69981, which was published against the repository out of band before coordinated disclosure concluded. CVE-2025-69981 describes a "CWE-434: Unrestricted Upload of File with Dangerous Type" vulnerability. While a CWE-434 is present, it was an unsafe, intended feature of the application that has been locked behind authentication. This report describes a "CWE-35: Path Traversal" that enables an arbitrary file write.
Other sources
FUXA is a web-based Process Visualization (SCADA/HMI/Dashboard) software. A path traversal vulnerability in FUXA allows an unauthenticated, remote attacker to write arbitrary files to arbitrary locations on the server filesystem. This affects FUXA through version 1.2.9. This issue has been patched in FUXA version 1.2.10.
— MITRE
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2026-25895?
The CVE-2026-25895 vulnerability has a high severity rating due to its potential for unauthenticated remote code execution.
How do I fix CVE-2026-25895?
To fix CVE-2026-25895, upgrade FUXA to version 1.2.10 or later.
What types of attacks can be executed using CVE-2026-25895?
CVE-2026-25895 can be exploited by unauthenticated attackers to execute arbitrary code through arbitrary file writes.
Which versions of FUXA are affected by CVE-2026-25895?
FUXA versions prior to 1.2.10 are affected by CVE-2026-25895.
Is authentication required to exploit CVE-2026-25895?
No, CVE-2026-25895 can be exploited by unauthenticated attackers.