CVE record · CVE-2026-63356

Cross-site scripting in Siemens SIMATIC Drive Controller CPU 1504D TF and others

CVSS 5.3 MediumEPSS 0.0019 · 8th percentile

Published by the CVE Program (CNA: siemens) at 13 Oct 2026, 09:18 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Siemens	SIMATIC Drive Controller CPU 1504D TF	affected before * custom Other versions: unknown
Siemens	SIMATIC Drive Controller CPU 1507D TF	affected before * custom Other versions: unknown
Siemens	SIMATIC ET 200SP CPU 1510SP F-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC ET 200SP CPU 1510SP F-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC ET 200SP CPU 1510SP-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC ET 200SP CPU 1510SP-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC ET 200SP CPU 1512SP F-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC ET 200SP CPU 1512SP F-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC ET 200SP CPU 1512SP-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC ET 200SP CPU 1512SP-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC ET 200SP CPU 1514SP F-2 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC ET 200SP CPU 1514SP-2 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC ET 200SP CPU 1514SPT F-2 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC ET 200SP CPU 1514SPT-2 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants)	affected before * custom Other versions: unknown
Siemens	SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) V2 CPUs - Windows OS	affected before * custom Other versions: unknown
Siemens	SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) V3 CPUs - Industrial OS	affected before * custom Other versions: unknown
Siemens	SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) V3 CPUs - Windows OS	affected before * custom Other versions: unknown
Siemens	SIMATIC ET 200SP Open Controller CPU 1515SP PC3 V4 CPUs	affected before * custom Other versions: unknown
Siemens	SIMATIC S7-1500 CPU 1511-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC S7-1500 CPU 1511-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC S7-1500 CPU 1511-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC S7-1500 CPU 1511-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC S7-1500 CPU 1511C-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC S7-1500 CPU 1511C-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC S7-1500 CPU 1511C-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC S7-1500 CPU 1511F-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC S7-1500 CPU 1511F-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC S7-1500 CPU 1511F-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC S7-1500 CPU 1511T-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC S7-1500 CPU 1511T-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC S7-1500 CPU 1511TF-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC S7-1500 CPU 1511TF-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC S7-1500 CPU 1512C-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC S7-1500 CPU 1512C-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC S7-1500 CPU 1512C-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC S7-1500 CPU 1513-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC S7-1500 CPU 1513-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC S7-1500 CPU 1513-1 PN	affected before * custom Other versions: unknown
Siemens	SIMATIC S7-1500 CPU 1513F-1 PN	affected before * custom Other versions: unknown

And 117 more products. The full list is on the CVE record.

Identifiers: CVE-2026-63356
CNA: siemens
Weakness (CWE): CWE-79
Tags: Siemens SIMATIC Drive Controller CPU 1504D TF
Siemens SIMATIC Drive Controller CPU 1507D TF
Siemens SIMATIC ET 200SP CPU 1510SP F-1 PN
Siemens SIMATIC ET 200SP CPU 1510SP-1 PN
Siemens SIMATIC ET 200SP CPU 1512SP F-1 PN
Siemens SIMATIC ET 200SP CPU 1512SP-1 PN
Siemens SIMATIC ET 200SP CPU 1514SP F-2 PN
Siemens SIMATIC ET 200SP CPU 1514SP-2 PN
Cross-site scripting (XSS)
Published: 13 Oct 2026
Updated: 13 Oct 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
6.1	Medium	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N	CNA (siemens)
5.3	Medium	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N	CNA (siemens)Used for this record

CISA KEV Not listed.
EPSS 0.0019, the 8th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 13 Oct 2026. New records show when each source confirmed them.

Sources

References from the CNA

cert-portal.siemens.com/productcert/html/ssa-591731.html

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.