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9.4

Siemens S7‑1500 CPUs execute malicious code from trace files

CVE-2026-63353 · published 3 days ago
Summary

The CPUs display diagnostic trace data on a web page. If a trace file includes hidden script in its comment section, that script runs when the page loads, potentially letting an attacker control the PLC through the user's browser session. Update the devices to the latest firmware, restrict the right to import trace files, and only open trace files that come from trusted sources.

What to do
  • Update siemens simatic s7-1500 cpu 1515tf-2 pn to version * or later.
  • Update siemens simatic s7-1500 cpu 1516-3 pn/dp to version * or later.
  • Update siemens simatic s7-1500 cpu 1516f-3 pn/dp to version * or later.
  • Update siemens simatic s7-1500 cpu 1516pro f-2 pn to version * or later.
  • Update siemens simatic s7-1500 cpu 1516pro-2 pn to version * or later.
  • Update siemens simatic s7-1500 cpu 1516t-3 pn to version * or later.
  • Update siemens simatic s7-1500 cpu 1516t-3 pn/dp to version * or later.
  • Update siemens simatic s7-1500 cpu 1516tf-3 pn to version * or later.
  • Update siemens simatic s7-1500 cpu 1516tf-3 pn/dp to version * or later.
  • Update siemens simatic s7-1500 cpu 1517-3 pn to version * or later.
  • Update siemens simatic s7-1500 cpu 1517-3 pn/dp to version * or later.
  • Update siemens simatic s7-1500 cpu 1517f-3 pn to version * or later.
  • Update siemens simatic s7-1500 cpu 1517f-3 pn/dp to version * or later.
  • Update siemens simatic s7-1500 cpu 1517t-3 pn to version * or later.
  • Update siemens simatic s7-1500 cpu 1517t-3 pn/dp to version * or later.
  • Update siemens simatic s7-1500 cpu 1517tf-3 pn to version * or later.
  • Update siemens simatic s7-1500 cpu 1517tf-3 pn/dp to version * or later.
  • Update siemens simatic s7-1500 cpu 1518-3 pn to version * or later.
  • Update siemens simatic s7-1500 cpu 1518-4 pn/dp to version * or later.
  • Update siemens simatic s7-1500 cpu 1518-4 pn/dp mfp to version * or later.
  • Update siemens simatic s7-1500 cpu 1518f-3 pn to version * or later.
  • Update siemens simatic s7-1500 cpu 1518f-4 pn/dp to version * or later.
  • Update siemens simatic s7-1500 cpu 1518f-4 pn/dp mfp to version * or later.
  • Update siemens simatic s7-1500 cpu 1518t-3 pn to version * or later.
  • Update siemens simatic s7-1500 cpu 1518t-4 pn/dp to version * or later.
  • Update siemens simatic s7-1500 cpu 1518tf-3 pn to version * or later.
  • Update siemens simatic s7-1500 cpu 1518tf-4 pn/dp to version * or later.
  • Update siemens simatic s7-1500 cpu s7-1518-4 pn/dp odk to version * or later.
  • Update siemens siplus s7-1500 cpu 1516-3 pn/dp rail to version * or later.
  • Update siemens siplus s7-1500 cpu 1516-3 pn/dp tx rail to version * or later.
  • Update siemens siplus s7-1500 cpu 1516f-3 pn/dp to version * or later.
  • Update siemens siplus s7-1500 cpu 1516f-3 pn/dp rail to version * or later.
  • Update siemens siplus s7-1500 cpu 1518-4 pn/dp to version * or later.
  • Update siemens siplus s7-1500 cpu 1518-4 pn/dp mfp to version * or later.
  • Update siemens siplus s7-1500 cpu 1518f-4 pn/dp to version * or later.
  • Update siemens simatic drive controller cpu 1504d tf to version * or later.
  • Update siemens simatic drive controller cpu 1507d tf to version * or later.
  • Update siemens simatic et 200sp cpu 1510sp f-1 pn to version * or later.
  • Update siemens simatic et 200sp cpu 1510sp-1 pn to version * or later.
  • Update siemens simatic et 200sp cpu 1512sp f-1 pn to version * or later.
  • Update siemens simatic et 200sp cpu 1512sp-1 pn to version * or later.
  • Update siemens simatic et 200sp cpu 1514sp f-2 pn to version * or later.
  • Update siemens simatic et 200sp cpu 1514sp-2 pn to version * or later.
  • Update siemens simatic et 200sp cpu 1514spt f-2 pn to version * or later.
  • Update siemens simatic et 200sp cpu 1514spt-2 pn to version * or later.
  • Update siemens simatic et 200sp open controller cpu 1515sp pc (incl. siplus variants) to version * or later.
  • Update siemens simatic et 200sp open controller cpu 1515sp pc2 (incl. siplus variants) v2 cpus - windows os to version * or later.
  • Update siemens simatic et 200sp open controller cpu 1515sp pc2 (incl. siplus variants) v3 cpus - industrial os to version * or later.
  • Update siemens simatic et 200sp open controller cpu 1515sp pc2 (incl. siplus variants) v3 cpus - windows os to version * or later.
  • Update siemens simatic et 200sp open controller cpu 1515sp pc3 v4 cpus to version * or later.
  • Update siemens simatic s7-1500 cpu 1511-1 pn to version * or later.
  • Update siemens simatic s7-1500 cpu 1511c-1 pn to version * or later.
  • Update siemens simatic s7-1500 cpu 1511f-1 pn to version * or later.
  • Update siemens simatic s7-1500 cpu 1511t-1 pn to version * or later.
  • Update siemens simatic s7-1500 cpu 1511tf-1 pn to version * or later.
  • Update siemens simatic s7-1500 cpu 1512c-1 pn to version * or later.
  • Update siemens simatic s7-1500 cpu 1513-1 pn to version * or later.
  • Update siemens simatic s7-1500 cpu 1513f-1 pn to version * or later.
  • Update siemens simatic s7-1500 cpu 1513pro f-2 pn to version * or later.
  • Update siemens simatic s7-1500 cpu 1513pro-2 pn to version * or later.
  • Update siemens simatic s7-1500 cpu 1515-2 pn to version * or later.
  • Update siemens simatic s7-1500 cpu 1515f-2 pn to version * or later.
  • Update siemens simatic s7-1500 cpu 1515t-2 pn to version * or later.
  • Update siemens simatic s7-1500 cpu s7-1518f-4 pn/dp odk to version * or later.
  • Update siemens simatic s7-1500 et 200pro: cpu 1513pro f-2 pn to version * or later.
  • Update siemens simatic s7-1500 et 200pro: cpu 1513pro-2 pn to version * or later.
  • Update siemens simatic s7-1500 et 200pro: cpu 1516pro f-2 pn to version * or later.
  • Update siemens simatic s7-1500 et 200pro: cpu 1516pro-2 pn to version * or later.
  • Update siemens simatic s7-1500 software controller cpu 1507s f v2 to version * or later.
  • Update siemens simatic s7-1500 software controller cpu 1507s f v3 to version * or later.
  • Update siemens simatic s7-1500 software controller cpu 1507s f v4 to version * or later.
  • Update siemens simatic s7-1500 software controller cpu 1507s v2 to version * or later.
  • Update siemens simatic s7-1500 software controller cpu 1507s v3 to version * or later.
  • Update siemens simatic s7-1500 software controller cpu 1507s v4 to version * or later.
  • Update siemens simatic s7-1500 software controller cpu 1508s f v2 to version * or later.
  • Update siemens simatic s7-1500 software controller cpu 1508s f v3 to version * or later.
  • Update siemens simatic s7-1500 software controller cpu 1508s f v4 to version * or later.
  • Update siemens simatic s7-1500 software controller cpu 1508s t v3 to version * or later.
  • Update siemens simatic s7-1500 software controller cpu 1508s tf v3 to version * or later.
  • Update siemens simatic s7-1500 software controller cpu 1508s v2 to version * or later.
  • Update siemens simatic s7-1500 software controller cpu 1508s v3 to version * or later.
  • Update siemens simatic s7-1500 software controller cpu 1508s v4 to version * or later.
  • Update siemens simatic s7-1500 software controller linux v2 to version * or later.
  • Update siemens simatic s7-1500 software controller linux v3 to version * or later.
  • Update siemens simatic s7-plcsim advanced to version * or later.
  • Update siemens siplus et 200sp cpu 1510sp f-1 pn to version * or later.
  • Update siemens siplus et 200sp cpu 1510sp f-1 pn rail to version * or later.
  • Update siemens siplus et 200sp cpu 1510sp-1 pn to version * or later.
  • Update siemens siplus et 200sp cpu 1510sp-1 pn rail to version * or later.
  • Update siemens siplus et 200sp cpu 1512sp f-1 pn to version * or later.
  • Update siemens siplus et 200sp cpu 1512sp f-1 pn rail to version * or later.
  • Update siemens siplus et 200sp cpu 1512sp-1 pn to version * or later.
  • Update siemens siplus et 200sp cpu 1512sp-1 pn rail to version * or later.
  • Update siemens siplus s7-1500 cpu 1511-1 pn to version * or later.
  • Update siemens siplus s7-1500 cpu 1511-1 pn t1 rail to version * or later.
  • Update siemens siplus s7-1500 cpu 1511-1 pn tx rail to version * or later.
  • Update siemens siplus s7-1500 cpu 1511f-1 pn to version * or later.
  • Update siemens siplus s7-1500 cpu 1513-1 pn to version * or later.
  • Update siemens siplus s7-1500 cpu 1513f-1 pn to version * or later.
  • Update siemens siplus s7-1500 cpu 1515f-2 pn to version * or later.
  • Update siemens siplus s7-1500 cpu 1515f-2 pn rail to version * or later.
  • Update siemens siplus s7-1500 cpu 1515f-2 pn t2 rail to version * or later.
  • Update siemens siplus s7-1500 cpu 1516-3 pn/dp to version * or later.
Affected software
VendorProductAffected versions
siemens simatic s7-1500 cpu 1515tf-2 pn < *
siemens simatic s7-1500 cpu 1516-3 pn/dp < *
siemens simatic s7-1500 cpu 1516f-3 pn/dp < *
siemens simatic s7-1500 cpu 1516pro f-2 pn < *
siemens simatic s7-1500 cpu 1516pro-2 pn < *
siemens simatic s7-1500 cpu 1516t-3 pn < *
siemens simatic s7-1500 cpu 1516t-3 pn/dp < *
siemens simatic s7-1500 cpu 1516tf-3 pn < *
siemens simatic s7-1500 cpu 1516tf-3 pn/dp < *
siemens simatic s7-1500 cpu 1517-3 pn < *
siemens simatic s7-1500 cpu 1517-3 pn/dp < *
siemens simatic s7-1500 cpu 1517f-3 pn < *
siemens simatic s7-1500 cpu 1517f-3 pn/dp < *
siemens simatic s7-1500 cpu 1517t-3 pn < *
siemens simatic s7-1500 cpu 1517t-3 pn/dp < *
siemens simatic s7-1500 cpu 1517tf-3 pn < *
siemens simatic s7-1500 cpu 1517tf-3 pn/dp < *
siemens simatic s7-1500 cpu 1518-3 pn < *
siemens simatic s7-1500 cpu 1518-4 pn/dp < *
siemens simatic s7-1500 cpu 1518-4 pn/dp mfp < *
siemens simatic s7-1500 cpu 1518f-3 pn < *
siemens simatic s7-1500 cpu 1518f-4 pn/dp < *
siemens simatic s7-1500 cpu 1518f-4 pn/dp mfp < *
siemens simatic s7-1500 cpu 1518t-3 pn < *
siemens simatic s7-1500 cpu 1518t-4 pn/dp < *
siemens simatic s7-1500 cpu 1518tf-3 pn < *
siemens simatic s7-1500 cpu 1518tf-4 pn/dp < *
siemens simatic s7-1500 cpu s7-1518-4 pn/dp odk < *
siemens siplus s7-1500 cpu 1516-3 pn/dp rail < *
siemens siplus s7-1500 cpu 1516-3 pn/dp tx rail < *
siemens siplus s7-1500 cpu 1516f-3 pn/dp < *
siemens siplus s7-1500 cpu 1516f-3 pn/dp rail < *
siemens siplus s7-1500 cpu 1518-4 pn/dp < *
siemens siplus s7-1500 cpu 1518-4 pn/dp mfp < *
siemens siplus s7-1500 cpu 1518f-4 pn/dp < *
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 < *
siemens simatic et 200sp cpu 1514spt f-2 pn < *
siemens simatic et 200sp cpu 1514spt-2 pn < *
siemens simatic et 200sp open controller cpu 1515sp pc (incl. siplus variants) < *
siemens simatic et 200sp open controller cpu 1515sp pc2 (incl. siplus variants) v2 cpus - windows os < *
siemens simatic et 200sp open controller cpu 1515sp pc2 (incl. siplus variants) v3 cpus - industrial os < *
siemens simatic et 200sp open controller cpu 1515sp pc2 (incl. siplus variants) v3 cpus - windows os < *
siemens simatic et 200sp open controller cpu 1515sp pc3 v4 cpus < *
Showing 50 of 103. Show the rest
VendorProductAffected versions
siemens simatic s7-1500 cpu 1511-1 pn < *
siemens simatic s7-1500 cpu 1511c-1 pn < *
siemens simatic s7-1500 cpu 1511f-1 pn < *
siemens simatic s7-1500 cpu 1511t-1 pn < *
siemens simatic s7-1500 cpu 1511tf-1 pn < *
siemens simatic s7-1500 cpu 1512c-1 pn < *
siemens simatic s7-1500 cpu 1513-1 pn < *
siemens simatic s7-1500 cpu 1513f-1 pn < *
siemens simatic s7-1500 cpu 1513pro f-2 pn < *
siemens simatic s7-1500 cpu 1513pro-2 pn < *
siemens simatic s7-1500 cpu 1515-2 pn < *
siemens simatic s7-1500 cpu 1515f-2 pn < *
siemens simatic s7-1500 cpu 1515t-2 pn < *
siemens simatic s7-1500 cpu s7-1518f-4 pn/dp odk < *
siemens simatic s7-1500 et 200pro: cpu 1513pro f-2 pn < *
siemens simatic s7-1500 et 200pro: cpu 1513pro-2 pn < *
siemens simatic s7-1500 et 200pro: cpu 1516pro f-2 pn < *
siemens simatic s7-1500 et 200pro: cpu 1516pro-2 pn < *
siemens simatic s7-1500 software controller cpu 1507s f v2 < *
siemens simatic s7-1500 software controller cpu 1507s f v3 < *
siemens simatic s7-1500 software controller cpu 1507s f v4 < *
siemens simatic s7-1500 software controller cpu 1507s v2 < *
siemens simatic s7-1500 software controller cpu 1507s v3 < *
siemens simatic s7-1500 software controller cpu 1507s v4 < *
siemens simatic s7-1500 software controller cpu 1508s f v2 < *
siemens simatic s7-1500 software controller cpu 1508s f v3 < *
siemens simatic s7-1500 software controller cpu 1508s f v4 < *
siemens simatic s7-1500 software controller cpu 1508s t v3 < *
siemens simatic s7-1500 software controller cpu 1508s tf v3 < *
siemens simatic s7-1500 software controller cpu 1508s v2 < *
siemens simatic s7-1500 software controller cpu 1508s v3 < *
siemens simatic s7-1500 software controller cpu 1508s v4 < *
siemens simatic s7-1500 software controller linux v2 < *
siemens simatic s7-1500 software controller linux v3 < *
siemens simatic s7-plcsim advanced < *
siemens siplus et 200sp cpu 1510sp f-1 pn < *
siemens siplus et 200sp cpu 1510sp f-1 pn rail < *
siemens siplus et 200sp cpu 1510sp-1 pn < *
siemens siplus et 200sp cpu 1510sp-1 pn rail < *
siemens siplus et 200sp cpu 1512sp f-1 pn < *
siemens siplus et 200sp cpu 1512sp f-1 pn rail < *
siemens siplus et 200sp cpu 1512sp-1 pn < *
siemens siplus et 200sp cpu 1512sp-1 pn rail < *
siemens siplus s7-1500 cpu 1511-1 pn < *
siemens siplus s7-1500 cpu 1511-1 pn t1 rail < *
siemens siplus s7-1500 cpu 1511-1 pn tx rail < *
siemens siplus s7-1500 cpu 1511f-1 pn < *
siemens siplus s7-1500 cpu 1513-1 pn < *
siemens siplus s7-1500 cpu 1513f-1 pn < *
siemens siplus s7-1500 cpu 1515f-2 pn < *
siemens siplus s7-1500 cpu 1515f-2 pn rail < *
siemens siplus s7-1500 cpu 1515f-2 pn t2 rail < *
siemens siplus s7-1500 cpu 1516-3 pn/dp < *
Original advisory text
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 ...
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.
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker full control
Severity
9.4 Critical
Exploitation
<1% chance of attack within 30 days
Type
CWE-79Cross-site Scripting (XSS)
Timeline
Published13 Oct 2026
Updated15 Oct 2026
First seen13 Oct 2026
Sources
CVE-2026-63353 · NVD
CVE-2026-63353 · MITRE
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