XSS in Siemens Simatic Drive Controller CPU 1504d Tf
CVE-2026-25787
Affected devices do not properly validate and sanitize Technology Object (TO) name rendered on the "Motion Control Diagnostics" 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 "Motion Control Diagnostics" parameters page, the malicious code would be executed in the scope of their web session.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.005 (44.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.002
Affected products
- Siemens Simatic Drive Controller CPU 1504d Tf — versions 0
- Siemens Simatic Drive Controller CPU 1507d Tf — versions 0
- Siemens Simatic Et 200sp CPU 1510sp-1 Pn — versions 0
- Siemens Simatic Et 200sp CPU 1510sp F-1 Pn — versions 0
- Siemens Simatic Et 200sp CPU 1512sp-1 Pn — versions 0
- Siemens Simatic Et 200sp CPU 1512sp F-1 Pn — versions 0
- Siemens Simatic Et 200sp CPU 1514sp-2 Pn — versions 0
- Siemens Simatic Et 200sp CPU 1514sp F-2 Pn — versions 0
- Siemens Simatic Et 200sp CPU 1514spt-2 Pn — versions 0
- Siemens Simatic Et 200sp CPU 1514spt F-2 Pn — versions 0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-25787?
- CVE-2026-25787 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-2026-25787?
- Critical severity. CVSS v3 base score is 9.1 out of 10.