Vulnerability · Published Jul 8, 2025 · Assigned by siemens
CVE-2025-27127
Medium 4.3
In plain English
A medium-severity unrestricted file upload in TIA Project-Server from Siemens. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities).
Official description
A vulnerability has been identified in TIA Project-Server (All versions < V2.1.1), TIA Project-Server V17 (All versions), Totally Integrated Automation Portal (TIA Portal) V17 (All versions), Totally Integrated Automation Portal (TIA Portal) V18 (All versions), Totally Integrated Automation Portal (TIA Portal) V19 (All versions < V19 Update 4), Totally Integrated Automation Portal (TIA Portal) V20 (All versions < V20 Update 3). The affected application improperly handles uploaded projects in the document root. This could allow an attacker with contributor privileges to cause denial of service by uploading a malicious project.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Siemens | TIA Project-Server | 0 – before V2.1.1 |
| Siemens | TIA Project-Server V17 | 0 – before * |
| Siemens | Totally Integrated Automation Portal (TIA Portal) V17 | 0 – before * |
| Siemens | Totally Integrated Automation Portal (TIA Portal) V18 | 0 – before * |
| Siemens | Totally Integrated Automation Portal (TIA Portal) V19 | 0 – before V19 Update 4 |
| Siemens | Totally Integrated Automation Portal (TIA Portal) V20 | 0 – before V20 Update 3 |
Weakness: CWE-434 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C