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Vulnerability · Published Oct 13, 2026 · Assigned by siemens

CVE-2026-63353

Critical 9.6

In plain English

A critical-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 24% of all known vulnerabilities).

Severity (CVSS 3.1)9.6Critical
Exploit odds (30 days)0.3%top 75.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Affected devices do not properly sanitize comment fields contained in imported trace files before rendering them on the Trace page. This could allow an attacker to social engineer an authorized user who holds the function right “Read diagnostics” into importing a specially crafted trace file. Successful exploitation could allow attacker-controlled JavaScript to execute in the user’s browser session and perform PLC operations through the web server within the scope of the user’s authorization.

Affected products (as reported)

VendorProductVersions
Siemens SIMATIC Drive Controller CPU 1504D TF 0 – before *
Siemens SIMATIC Drive Controller CPU 1507D TF 0 – before *
Siemens SIMATIC ET 200SP CPU 1510SP F-1 PN 0 – before *
Siemens SIMATIC ET 200SP CPU 1510SP F-1 PN 0 – before *
Siemens SIMATIC ET 200SP CPU 1510SP-1 PN 0 – before *
Siemens SIMATIC ET 200SP CPU 1510SP-1 PN 0 – before *
Siemens SIMATIC ET 200SP CPU 1512SP F-1 PN 0 – before *
Siemens SIMATIC ET 200SP CPU 1512SP F-1 PN 0 – before *
Siemens SIMATIC ET 200SP CPU 1512SP-1 PN 0 – before *
Siemens SIMATIC ET 200SP CPU 1512SP-1 PN 0 – before *
Siemens SIMATIC ET 200SP CPU 1514SP F-2 PN 0 – before *
Siemens SIMATIC ET 200SP CPU 1514SP-2 PN 0 – before *
Siemens SIMATIC ET 200SP CPU 1514SPT F-2 PN 0 – before *
Siemens SIMATIC ET 200SP CPU 1514SPT-2 PN 0 – before *
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 - Windows OS 0 – before *
Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) V3 CPUs - Industrial OS 0 – before *
Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) V3 CPUs - Windows OS 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 *
Siemens SIMATIC S7-1500 CPU 1511-1 PN 0 – before *
Siemens SIMATIC S7-1500 CPU 1511-1 PN 0 – before *
Siemens SIMATIC S7-1500 CPU 1511C-1 PN 0 – before *
Siemens SIMATIC S7-1500 CPU 1511C-1 PN 0 – before *
Siemens SIMATIC S7-1500 CPU 1511C-1 PN 0 – before *
Siemens SIMATIC S7-1500 CPU 1511F-1 PN 0 – before *
Siemens SIMATIC S7-1500 CPU 1511F-1 PN 0 – before *
Siemens SIMATIC S7-1500 CPU 1511F-1 PN 0 – before *
Siemens SIMATIC S7-1500 CPU 1511T-1 PN 0 – before *

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

References