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Vulnerability · Published May 12, 2026 · Assigned by siemens

CVE-2026-25786

Critical 9.1

In plain English

A critical-severity cross-site scripting in SIMATIC Drive Controller CPU 1504D TF from Siemens. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities).

Severity (CVSS 3.1)9.1Critical
Exploit odds (30 days)0.4%top 68.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

VendorProductVersions
Siemens SIMATIC Drive Controller CPU 1504D TF 0 – before V3.1.6
Siemens SIMATIC Drive Controller CPU 1507D TF 0 – before V3.1.6
Siemens SIMATIC ET 200SP CPU 1510SP F-1 PN 0 – before *
Siemens SIMATIC ET 200SP CPU 1510SP F-1 PN 0 – before V2.9.9
Siemens SIMATIC ET 200SP CPU 1510SP F-1 PN 0 – before V4.1.6
Siemens SIMATIC ET 200SP CPU 1510SP-1 PN 0 – before *
Siemens SIMATIC ET 200SP CPU 1510SP-1 PN 0 – before V2.9.9
Siemens SIMATIC ET 200SP CPU 1510SP-1 PN 0 – before V4.1.6
Siemens SIMATIC ET 200SP CPU 1512SP F-1 PN 0 – before *
Siemens SIMATIC ET 200SP CPU 1512SP F-1 PN 0 – before V2.9.9
Siemens SIMATIC ET 200SP CPU 1512SP F-1 PN 0 – before V4.1.6
Siemens SIMATIC ET 200SP CPU 1512SP-1 PN 0 – before *
Siemens SIMATIC ET 200SP CPU 1512SP-1 PN 0 – before V2.9.9
Siemens SIMATIC ET 200SP CPU 1512SP-1 PN 0 – before V4.1.6
Siemens SIMATIC ET 200SP CPU 1514SP F-2 PN 0 – before V4.1.6
Siemens SIMATIC ET 200SP CPU 1514SP-2 PN 0 – before V4.1.6
Siemens SIMATIC ET 200SP CPU 1514SPT F-2 PN 0 – before V4.1.6
Siemens SIMATIC ET 200SP CPU 1514SPT-2 PN 0 – before V4.1.6
Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants) 0 – before *
Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) V2 CPUs 0 – before *
Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) V3 CPUs 0 – before *
Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC3 V4 CPUs 0 – before *
Siemens SIMATIC S7-1500 CPU 1511-1 PN 0 – before *
Siemens SIMATIC S7-1500 CPU 1511-1 PN 0 – before V2.9.9
Siemens SIMATIC S7-1500 CPU 1511-1 PN 0 – before V2.9.9
Siemens SIMATIC S7-1500 CPU 1511-1 PN 0 – before V4.1.6
Siemens SIMATIC S7-1500 CPU 1511C-1 PN 0 – before V2.9.9
Siemens SIMATIC S7-1500 CPU 1511C-1 PN 0 – before V2.9.9
Siemens SIMATIC S7-1500 CPU 1511C-1 PN 0 – before V4.1.6
Siemens SIMATIC S7-1500 CPU 1511F-1 PN 0 – before *

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

References