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Vulnerability · Published May 12, 2026 · Assigned by siemens

CVE-2026-25789

High 7.1

In plain English

A high-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 0.3% (higher than 20% of all known vulnerabilities).

Severity (CVSS 3.1)7.1High
Exploit odds (30 days)0.3%top 80.0% 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 filenames on the Firmware Update page. This could allow a remote attacker to social engineer the user into selecting the modified firmware file to be uploaded. This would result in malitcious JavaScript execution in the context of the authenticated user's session without requiring the file to be uploaded, potentially leading to session hijacking or credential theft.

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:H/PR:L/UI:R/S:U/C:H/I:H/A:H

References