Arbitrary file upload in Totally Integrated Automation Portal (TIA Portal) and TIA Project-Server - CVE-2025-27127
Published: July 15, 2025
Vulnerability identifier: #VU112903
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-27127
CWE-ID: CWE-434
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Siemens
Affected software:
Totally Integrated Automation Portal (TIA Portal)
TIA Project-Server
Totally Integrated Automation Portal (TIA Portal)
TIA Project-Server
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to insufficient validation of file during file upload in the document root. A remote user can upload a malicious file and execute it on the server.
How to mitigate CVE-2025-27127
Install updates from vendor's website.