CVE-2025-40943: Siemens Devices allow Code Injection via Malformed Trace Files
CVE-2025-40943 Published on March 10, 2026

Affected devices do not properly sanitize contents of trace files. This could allow an attacker to inject code through social engineering an authorized user, who has the function right "Read diagnostics", to import a specially crafted trace file. The malicious trace file is insufficiently sanitized and malicious code could be executed in the clients browser session and trigger PLC operations via the webserver that the legitimate user is authorized to perform.

NVD

Weakness Type

What is an Eval Injection Vulnerability?

The software receives input from an upstream component, but it does not neutralize or incorrectly neutralizes code syntax before using the input in a dynamic evaluation call (e.g. "eval"). This may allow an attacker to execute arbitrary code, or at least modify what code can be executed.

CVE-2025-40943 has been classified to as an Eval Injection vulnerability or weakness.

Products Associated with CVE-2025-40943

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Siemens Simatic S7 1500 Software Controller

Siemens Simatic S7 Plcsim Advanced

Affected Versions

Siemens SIMATIC Drive Controller CPU 1504D TF:

Before V3.1.6 is affected.

Siemens SIMATIC Drive Controller CPU 1507D TF:

Before V3.1.6 is affected.

Siemens SIMATIC ET 200SP CPU 1510SP F-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC ET 200SP CPU 1510SP F-1 PN:

Before V4.1.2 is affected.

Siemens SIMATIC ET 200SP CPU 1510SP-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC ET 200SP CPU 1510SP-1 PN:

Before V4.1.2 is affected.

Siemens SIMATIC ET 200SP CPU 1512SP F-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC ET 200SP CPU 1512SP F-1 PN:

Before V4.1.2 is affected.

Siemens SIMATIC ET 200SP CPU 1512SP-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC ET 200SP CPU 1512SP-1 PN:

Before V4.1.2 is affected.

Siemens SIMATIC ET 200SP CPU 1514SP F-2 PN:

Before V4.1.2 is affected.

Siemens SIMATIC ET 200SP CPU 1514SP-2 PN:

Before V4.1.2 is affected.

Siemens SIMATIC ET 200SP CPU 1514SPT F-2 PN:

Before V4.1.2 is affected.

Siemens SIMATIC ET 200SP CPU 1514SPT-2 PN:

Before V4.1.2 is affected.

Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants):

Before * is affected.

Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) V2 CPUs - Windows OS:

Before * is affected.

Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) V3 CPUs - Industrial OS:

Before * is affected.

Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) V3 CPUs - Windows OS:

Before * is affected.

Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC3 V4 CPUs:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1511-1 PN:

Before * is affected.

Siemens SIMATIC S7-1500 CPU 1511-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1511-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1511-1 PN:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1511C-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1511C-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1511C-1 PN:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1511F-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1511F-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1511F-1 PN:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1511T-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1511T-1 PN:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1511TF-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1511TF-1 PN:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1512C-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1512C-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1512C-1 PN:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1513-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1513-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1513-1 PN:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1513F-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1513F-1 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1513F-1 PN:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1513pro F-2 PN:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1513pro-2 PN:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1515-2 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1515-2 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1515-2 PN:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1515F-2 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1515F-2 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1515F-2 PN:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1515T-2 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1515T-2 PN:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1515TF-2 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1515TF-2 PN:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1516-3 PN/DP:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1516-3 PN/DP:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1516-3 PN/DP:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1516F-3 PN/DP:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1516F-3 PN/DP:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU 1516F-3 PN/DP:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1516pro F-2 PN:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1516pro-2 PN:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1516T-3 PN:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1516T-3 PN/DP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1516TF-3 PN:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1516TF-3 PN/DP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1517-3 PN:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1517-3 PN/DP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1517F-3 PN:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1517F-3 PN/DP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1517F-3 PN/DP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1517T-3 PN:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1517T-3 PN/DP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1517TF-3 PN:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1517TF-3 PN/DP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1518-3 PN:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1518F-3 PN:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1518T-3 PN:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1518T-4 PN/DP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU 1518TF-3 PN:

Before V4.1.2 is affected.

Siemens SIMATIC S7-1500 CPU 1518TF-4 PN/DP:

Before V3.1.6 is affected.

Siemens SIMATIC S7-1500 CPU S7-1518-4 PN/DP ODK:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 CPU S7-1518F-4 PN/DP ODK:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 ET 200pro: CPU 1513PRO F-2 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 ET 200pro: CPU 1513PRO-2 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 ET 200pro: CPU 1516PRO F-2 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 ET 200pro: CPU 1516PRO-2 PN:

Before V2.9.9 is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1507S F V2:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1507S F V3:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1507S F V4:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1507S V2:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1507S V3:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1507S V4:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1508S F V2:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1508S F V3:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1508S F V4:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1508S T V3:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1508S TF V3:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1508S V2:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1508S V3:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller CPU 1508S V4:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller Linux V2:

Before * is affected.

Siemens SIMATIC S7-1500 Software Controller Linux V3:

Before * is affected.

Siemens SIMATIC S7-PLCSIM Advanced:

Before * is affected.

Siemens SIPLUS ET 200SP CPU 1510SP F-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS ET 200SP CPU 1510SP F-1 PN RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS ET 200SP CPU 1510SP-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS ET 200SP CPU 1510SP-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS ET 200SP CPU 1510SP-1 PN RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS ET 200SP CPU 1510SP-1 PN RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS ET 200SP CPU 1512SP F-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS ET 200SP CPU 1512SP F-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS ET 200SP CPU 1512SP F-1 PN RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS ET 200SP CPU 1512SP F-1 PN RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS ET 200SP CPU 1512SP-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS ET 200SP CPU 1512SP-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS ET 200SP CPU 1512SP-1 PN RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS ET 200SP CPU 1512SP-1 PN RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1511-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1511-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1511-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1511-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1511-1 PN T1 RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1511-1 PN T1 RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1511-1 PN TX RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1511-1 PN TX RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1511F-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1511F-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1513-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1513-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1513-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1513-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1513F-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1513F-1 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1515F-2 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1515F-2 PN:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1515F-2 PN RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1515F-2 PN T2 RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1516-3 PN/DP:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1516-3 PN/DP:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1516-3 PN/DP:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1516-3 PN/DP:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1516-3 PN/DP RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1516-3 PN/DP TX RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1516F-3 PN/DP:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1516F-3 PN/DP:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1516F-3 PN/DP RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1516F-3 PN/DP RAIL:

Before V2.9.9 is affected.

Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP:

Before V3.1.6 is affected.

Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP:

Before V3.1.6 is affected.

Siemens SIPLUS S7-1500 CPU 1518F-4 PN/DP:

Before V3.1.6 is affected.

Exploit Probability

EPSS

0.05%

Percentile

15.21%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.

CVE-2025-40943: Siemens Devices allow Code Injection via Malformed Trace FilesCVE-2025-40943 Published on March 10, 2026

Weakness Type

What is an Eval Injection Vulnerability?

Products Associated with CVE-2025-40943

Affected Versions

Exploit Probability

CVE-2025-40943: Siemens Devices allow Code Injection via Malformed Trace Files
CVE-2025-40943 Published on March 10, 2026