Siemens PLC XSS: Unvalidated PLC/Station Names in Web Interface
CVE-2026-25786 Published on May 12, 2026

Affected devices do not properly validate and sanitize PLC/station name rendered on the "communication" parameters 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 "communication" parameters page, the malicious code would be executed in the scope of their web session.

NVD

Weakness Type

What is a XSS Vulnerability?

The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

CVE-2026-25786 has been classified to as a XSS vulnerability or weakness.

Products Associated with CVE-2026-25786

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Siemens Simatic S7 1500 Software Controller

Siemens Simatic S7 Plcsim Advanced

Affected Versions

Siemens SIMATIC Drive Controller CPU 1504D TF:

Before V3.1.6 is affected.

Siemens SIMATIC Drive Controller CPU 1507D TF:

Before V3.1.6 is affected.

Siemens SIMATIC ET 200SP CPU 1510SP F-1 PN:

Before * is affected.

Siemens SIMATIC ET 200SP CPU 1510SP F-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC ET 200SP CPU 1510SP F-1 PN:

Before * is affected.

Siemens SIMATIC ET 200SP CPU 1510SP-1 PN:

Before * is affected.

Siemens SIMATIC ET 200SP CPU 1510SP-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC ET 200SP CPU 1510SP-1 PN:

Before * is affected.

Siemens SIMATIC ET 200SP CPU 1512SP F-1 PN:

Before * is affected.

Siemens SIMATIC ET 200SP CPU 1512SP F-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC ET 200SP CPU 1512SP F-1 PN:

Before * is affected.

Siemens SIMATIC ET 200SP CPU 1512SP-1 PN:

Before * is affected.

Siemens SIMATIC ET 200SP CPU 1512SP-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC ET 200SP CPU 1512SP-1 PN:

Before * is affected.

Siemens SIMATIC ET 200SP CPU 1514SP F-2 PN:

Before * is affected.

Siemens SIMATIC ET 200SP CPU 1514SP-2 PN:

Before * is affected.

Siemens SIMATIC ET 200SP CPU 1514SPT F-2 PN:

Before * is affected.

Siemens SIMATIC ET 200SP CPU 1514SPT-2 PN:

Before * is affected.

Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants):

Before * is affected.

Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) V2 CPUs:

Before * is affected.

Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) V3 CPUs:

Before * is affected.

Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC3 V4 CPUs:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1511-1 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1511-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1511-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1511-1 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1511C-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1511C-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1511C-1 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1511F-1 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1511F-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1511F-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1511F-1 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1511T-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1511T-1 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1511TF-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1511TF-1 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1512C-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1512C-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1512C-1 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1513-1 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1513-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1513-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1513-1 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1513F-1 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1513F-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1513F-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1513F-1 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1513pro F-2 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1513pro-2 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1515-2 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1515-2 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1515-2 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1515-2 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1515F-2 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1515F-2 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1515F-2 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1515F-2 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1515T-2 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1515T-2 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1515TF-2 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1515TF-2 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1516-3 PN/DP:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1516-3 PN/DP:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1516-3 PN/DP:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1516-3 PN/DP:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1516F-3 PN/DP:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1516F-3 PN/DP:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1516F-3 PN/DP:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1516F-3 PN/DP:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1516pro F-2 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1516pro-2 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1516T-3 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1516T-3 PN/DP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1516TF-3 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1516TF-3 PN/DP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1517-3 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1517-3 PN/DP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1517F-3 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1517F-3 PN/DP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1517F-3 PN/DP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1517T-3 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1517T-3 PN/DP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1517TF-3 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1517TF-3 PN/DP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1518-3 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1518F-3 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1518T-3 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1518T-4 PN/DP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1518TF-3 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1518TF-4 PN/DP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU S7-1518-4 PN/DP ODK:

Before * is affected.

Siemens SIMATIC S7-1500 CPU S7-1518F-4 PN/DP ODK:

Before * is affected.

Siemens SIMATIC S7-1500 ET 200pro: CPU 1513PRO F-2 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 ET 200pro: CPU 1513PRO-2 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 ET 200pro: CPU 1516PRO F-2 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 ET 200pro: CPU 1516PRO-2 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1507S F V2:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1507S F V3:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1507S F V4:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1507S V2:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1507S V3:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1507S V4:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1508S F V2:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1508S F V3:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1508S F V4:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1508S T V3:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1508S TF V3:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1508S V2:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1508S V3:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1508S V4:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller Linux V2:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller Linux V3:

Before * is affected.

Siemens SIMATIC S7-PLCSIM Advanced:

Before * is affected.

Siemens SIPLUS ET 200SP CPU 1510SP F-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS ET 200SP CPU 1510SP F-1 PN RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS ET 200SP CPU 1510SP-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS ET 200SP CPU 1510SP-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS ET 200SP CPU 1510SP-1 PN RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS ET 200SP CPU 1510SP-1 PN RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS ET 200SP CPU 1512SP F-1 PN:

Before * is affected.

Siemens SIPLUS ET 200SP CPU 1512SP F-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS ET 200SP CPU 1512SP F-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS ET 200SP CPU 1512SP F-1 PN RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS ET 200SP CPU 1512SP F-1 PN RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS ET 200SP CPU 1512SP-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS ET 200SP CPU 1512SP-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS ET 200SP CPU 1512SP-1 PN RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS ET 200SP CPU 1512SP-1 PN RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1511-1 PN:

Before * is affected.

Siemens SIPLUS S7-1500 CPU 1511-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1511-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1511-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1511-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1511-1 PN T1 RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1511-1 PN T1 RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1511-1 PN TX RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1511-1 PN TX RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1511F-1 PN:

Before * is affected.

Siemens SIPLUS S7-1500 CPU 1511F-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1511F-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1513-1 PN:

Before * is affected.

Siemens SIPLUS S7-1500 CPU 1513-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1513-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1513-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1513-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1513F-1 PN:

Before * is affected.

Siemens SIPLUS S7-1500 CPU 1513F-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1513F-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1515F-2 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1515F-2 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1515F-2 PN RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1515F-2 PN T2 RAIL:

Before V2.9.9 is affected.