Summary
| Parameter | Value |
|---|---|
| CVE ID | CVE-2026-25787 |
| Alert Source | GitHub Advisory - Critical Vulnerability |
| CVE Publication Year | 2026 |
| Date Published | 2026-05-12 |
| Vendor | Siemens |
| Product | SIMATIC |
| CVSS Score | 9.1 (critical) |
| EPSS Score | No data |
| CISA KEV | No |
| Ransomware | Not confirmed |
Vulnerability Description
Affected devices do not properly validate and sanitize Technology Object (TO) name rendered on the “Motion Control Diagnostics” page of the web interface. This could allow an authenticated attacker who is authorized to download a TIA project into the product, to inject malicious scripts into the page. If a benign user with appropriate rights accesses the “Motion Control Diagnostics” parameters page, the malicious code would be executed in the scope of their web session.
Required Actions
Apply vendor patches or mitigations as soon as available.
Who Is Affected?
This vulnerability affects SIMATIC by Siemens. Check if your organization uses this software and requires updates.
Sources
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