CVE-2026-25789: Siemens SIMATIC Drive Controller CPU 1504d Tf
High severity, CVSS 7.1. EPSS: 0.5% chance of exploitation in the next 30 days.
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
- Siemens SIMATIC Drive Controller CPU 1504d Tf: before V3.1.6 (fixed in V3.1.6)
- Siemens SIMATIC Drive Controller CPU 1507d Tf: before V3.1.6 (fixed in V3.1.6)
- Siemens SIMATIC Et 200sp CPU 1510sp-1 Pn: any version; before V2.9.9 (fixed in V2.9.9); before V4.1.6 (fixed in V4.1.6)
- Siemens SIMATIC Et 200sp CPU 1510sp F-1 Pn: any version; before V2.9.9 (fixed in V2.9.9); before V4.1.6 (fixed in V4.1.6)
- Siemens SIMATIC Et 200sp CPU 1512sp-1 Pn: any version; before V2.9.9 (fixed in V2.9.9); before V4.1.6 (fixed in V4.1.6)
- Siemens SIMATIC Et 200sp CPU 1512sp F-1 Pn: any version; before V2.9.9 (fixed in V2.9.9); before V4.1.6 (fixed in V4.1.6)
- Siemens SIMATIC Et 200sp CPU 1514sp-2 Pn: before V4.1.6 (fixed in V4.1.6)
- Siemens SIMATIC Et 200sp CPU 1514sp F-2 Pn: before V4.1.6 (fixed in V4.1.6)
- Siemens SIMATIC Et 200sp CPU 1514spt-2 Pn: before V4.1.6 (fixed in V4.1.6)
- Siemens SIMATIC Et 200sp CPU 1514spt F-2 Pn: before V4.1.6 (fixed in V4.1.6)
- Siemens SIMATIC Et 200sp Open Controller CPU 1515sp PC2 Incl. Siplus Variants v2 Cpus: any version
- Siemens SIMATIC Et 200sp Open Controller CPU 1515sp PC2 Incl. Siplus Variants v3 Cpus: any version
- Siemens SIMATIC Et 200sp Open Controller CPU 1515sp PC3 v4 Cpus: any version
- Siemens SIMATIC Et 200sp Open Controller CPU 1515sp Pc Incl. Siplus Variants: any version
- Siemens SIMATIC s7-1500 CPU 1511-1 Pn: any version; before V2.9.9 (fixed in V2.9.9); before V4.1.6 (fixed in V4.1.6)
- Siemens SIMATIC s7-1500 CPU 1511c-1 Pn: before V2.9.9 (fixed in V2.9.9); before V4.1.6 (fixed in V4.1.6)
- Siemens SIMATIC s7-1500 CPU 1511f-1 Pn: any version; before V2.9.9 (fixed in V2.9.9); before V4.1.6 (fixed in V4.1.6)
- Siemens SIMATIC s7-1500 CPU 1511t-1 Pn: before V2.9.9 (fixed in V2.9.9); before V4.1.6 (fixed in V4.1.6)
- Siemens SIMATIC s7-1500 CPU 1511tf-1 Pn: before V2.9.9 (fixed in V2.9.9); before V4.1.6 (fixed in V4.1.6)
- Siemens SIMATIC s7-1500 CPU 1512c-1 Pn: before V2.9.9 (fixed in V2.9.9); before V4.1.6 (fixed in V4.1.6)
- Siemens SIMATIC s7-1500 CPU 1513-1 Pn: any version; before V2.9.9 (fixed in V2.9.9); before V4.1.6 (fixed in V4.1.6)
- Siemens SIMATIC s7-1500 CPU 1513f-1 Pn: any version; before V2.9.9 (fixed in V2.9.9); before V4.1.6 (fixed in V4.1.6)
- Siemens SIMATIC s7-1500 CPU 1513pro-2 Pn: before V4.1.6 (fixed in V4.1.6)
- Siemens SIMATIC s7-1500 CPU 1513pro F-2 Pn: before V4.1.6 (fixed in V4.1.6)
- Siemens SIMATIC s7-1500 CPU 1515-2 Pn: any version; before V2.9.9 (fixed in V2.9.9); before V4.1.6 (fixed in V4.1.6)
- and 77 more
Published 2026-05-12. Last modified 2026-07-14.