XSS in Siemens Simatic Drive Controller Cpu 1504d Tf

CVE-2026-25786

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…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.001 (18.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-25786?
CVE-2026-25786 is a critical-severity vulnerability in Siemens Simatic Drive Controller Cpu 1504d Tf, classified under Cross-site Scripting. CVSS score: 9.1/10. Published 2026-05-12.
How severe is CVE-2026-25786?
Critical severity. CVSS v3 base score is 9.1 out of 10.