CVE-2019-19300

CVE-2019-19300

Published Apr 14, 2020 · Updated Jul 8, 2025

A vulnerability has been identified in Development/Evaluation Kits for PROFINET IO: EK-ERTEC 200, Development/Evaluation Kits for PROFINET IO: EK-ERTEC 200P, KTK ATE530S, SIDOOR ATD430W, SIDOOR ATE530S COATED, SIDOOR ATE531S, SIMATIC ET 200AL IM 157-1 PN (6ES7157-1AB00-0AB0), SIMATIC ET 200eco PN, AI 8xRTD/TC, M12-L (6ES7144-6JF00-0BB0), SIMATIC ET 200eco PN, CM 4x IO-Link, M12-L (6ES7148-6JE00-0BB0), SIMATIC ET 200eco PN, CM 8x IO-Link, M12-L (6ES7148-6JG00-0BB0), SIMATIC ET 200eco PN, CM 8x IO-Link, M12-L (6ES7148-6JJ00-0BB0), SIMATIC ET 200eco PN, DI 16x24VDC, M12-L (6ES7141-6BH00-0BB0), SIMATIC ET 200eco PN, DI 8x24VDC, M12-L (6ES7141-6BG00-0BB0), SIMATIC ET 200eco PN, DIQ 16x24VDC/2A, M12-L (6ES7143-6BH00-0BB0), SIMATIC ET 200eco PN, DQ 8x24VDC/0,5A, M12-L (6ES7142-6BG00-0BB0), SIMATIC ET 200eco PN, DQ 8x24VDC/2A, M12-L (6ES7142-6BR00-0BB0), SIMATIC ET 200MP IM 155-5 PN HF (6ES7155-5AA00-0AC0), SIMATIC ET 200pro IM 154-8 PN/DP CPU (6ES7154-8AB01-0AB0), SIMATIC ET 200pro IM 154-8F PN/DP CPU (6ES7154-8FB01-0AB0), SIMATIC ET 200pro IM 154-8FX PN/DP CPU (6ES7154-8FX00-0AB0), SIMATIC ET 200S IM 151-8 PN/DP CPU (6ES7151-8AB01-0AB0), SIMATIC ET 200S IM 151-8F PN/DP CPU (6ES7151-8FB01-0AB0), SIMATIC ET 200SP IM 155-6 MF HF (6ES7155-6MU00-0CN0), SIMATIC ET 200SP IM 155-6 PN HA (incl. SIPLUS variants), SIMATIC ET 200SP IM 155-6 PN HF (6ES7155-6AU00-0CN0), SIMATIC ET 200SP IM 155-6 PN/2 HF (6ES7155-6AU01-0CN0), SIMATIC ET 200SP IM 155-6 PN/3 HF (6ES7155-6AU30-0CN0), SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants), SIMATIC MICRO-DRIVE PDC, SIMATIC PN/MF Coupler (6ES7158-3MU10-0XA0), SIMATIC PN/PN Coupler (6ES7158-3AD10-0XA0), SIMATIC S7-1200 CPU family (incl. SIPLUS variants), SIMATIC S7-1500 CPU family (incl. related ET 200 CPUs and SIPLUS variants), SIMATIC S7-1500 Software Controller, SIMATIC S7-300 CPU 314C-2 PN/DP (6ES7314-6EH04-0AB0), SIMATIC S7-300 CPU 315-2 PN/DP (6ES7315-2EH14-0AB0), SIMATIC S7-300 CPU 315F-2 PN/DP (6ES7315-2FJ14-0AB0), SIMATIC S7-300 CPU 315T-3 PN/DP (6ES7315-7TJ10-0AB0), SIMATIC S7-300 CPU 317-2 PN/DP (6ES7317-2EK14-0AB0), SIMATIC S7-300 CPU 317F-2 PN/DP (6ES7317-2FK14-0AB0), SIMATIC S7-300 CPU 317T-3 PN/DP (6ES7317-7TK10-0AB0), SIMATIC S7-300 CPU 317TF-3 PN/DP (6ES7317-7UL10-0AB0), SIMATIC S7-300 CPU 319-3 PN/DP (6ES7318-3EL01-0AB0), SIMATIC S7-300 CPU 319F-3 PN/DP (6ES7318-3FL01-0AB0), SIMATIC S7-400 H V6 and below CPU family (incl. SIPLUS variants), SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants), SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants), SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants), SIMATIC TDC CP51M1, SIMATIC TDC CPU555, SIMATIC WinAC RTX 2010 (6ES7671-0RC08-0YA0), SIMATIC WinAC RTX F 2010 (6ES7671-1RC08-0YA0), SINAMICS S/G Control Unit w. PROFINET, SIPLUS ET 200MP IM 155-5 PN HF (6AG1155-5AA00-2AC0), SIPLUS ET 200MP IM 155-5 PN HF (6AG1155-5AA00-7AC0), SIPLUS ET 200MP IM 155-5 PN HF T1 RAIL (6AG2155-5AA00-1AC0), SIPLUS ET 200S IM 151-8 PN/DP CPU (6AG1151-8AB01-7AB0), SIPLUS ET 200S IM 151-8F PN/DP CPU (6AG1151-8FB01-2AB0), SIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU00-2CN0), SIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU00-4CN0), SIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU01-2CN0), SIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU01-7CN0), SIPLUS ET 200SP IM 155-6 PN HF T1 RAIL (6AG2155-6AU00-1CN0), SIPLUS ET 200SP IM 155-6 PN HF T1 RAIL (6AG2155-6AU01-1CN0), SIPLUS ET 200SP IM 155-6 PN HF TX RAIL (6AG2155-6AU01-4CN0), SIPLUS NET PN/PN Coupler (6AG2158-3AD10-4XA0), SIPLUS S7-300 CPU 314C-2 PN/DP (6AG1314-6EH04-7AB0), SIPLUS S7-300 CPU 315-2 PN/DP (6AG1315-2EH14-7AB0), SIPLUS S7-300 CPU 315F-2 PN/DP (6AG1315-2FJ14-2AB0), SIPLUS S7-300 CPU 317-2 PN/DP (6AG1317-2EK14-7AB0), SIPLUS S7-300 CPU 317F-2 PN/DP (6AG1317-2FK14-2AB0). The Interniche-based TCP Stack can be forced to make very expensive calls for every incoming packet which can lead to a denial of service.

CVSS severityUnavailable
Unscored
EPSS probability1.72%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A vulnerability has been identified in Development/Evaluation Kits for PROFINET IO: EK-ERTEC 200, Development/Evaluation Kits for PROFINET IO: EK-ERTEC 200P, KTK ATE530S, SIDOOR ATD430W, SIDOOR ATE530S COATED, SIDOOR ATE531S, SIMATIC ET 200AL IM 157-1 PN (6ES7157-1AB00-0AB0), SIMATIC ET 200eco PN, AI 8xRTD/TC, M12-L (6ES7144-6JF00-0BB0), SIMATIC ET 200eco PN, CM 4x IO-Link, M12-L (6ES7148-6JE00-0BB0), SIMATIC ET 200eco PN, CM 8x IO-Link, M12-L (6ES7148-6JG00-0BB0), SIMATIC ET 200eco PN, CM 8x IO-Link, M12-L (6ES7148-6JJ00-0BB0), SIMATIC ET 200eco PN, DI 16x24VDC, M12-L (6ES7141-6BH00-0BB0), SIMATIC ET 200eco PN, DI 8x24VDC, M12-L (6ES7141-6BG00-0BB0), SIMATIC ET 200eco PN, DIQ 16x24VDC/2A, M12-L (6ES7143-6BH00-0BB0), SIMATIC ET 200eco PN, DQ 8x24VDC/0,5A, M12-L (6ES7142-6BG00-0BB0), SIMATIC ET 200eco PN, DQ 8x24VDC/2A, M12-L (6ES7142-6BR00-0BB0), SIMATIC ET 200MP IM 155-5 PN HF (6ES7155-5AA00-0AC0), SIMATIC ET 200pro IM 154-8 PN/DP CPU (6ES7154-8AB01-0AB0), SIMATIC ET 200pro IM 154-8F PN/DP CPU (6ES7154-8FB01-0AB0), SIMATIC ET 200pro IM 154-8FX PN/DP CPU (6ES7154-8FX00-0AB0), SIMATIC ET 200S IM 151-8 PN/DP CPU (6ES7151-8AB01-0AB0), SIMATIC ET 200S IM 151-8F PN/DP CPU (6ES7151-8FB01-0AB0), SIMATIC ET 200SP IM 155-6 MF HF (6ES7155-6MU00-0CN0), SIMATIC ET 200SP IM 155-6 PN HA (incl. SIPLUS variants), SIMATIC ET 200SP IM 155-6 PN HF (6ES7155-6AU00-0CN0), SIMATIC ET 200SP IM 155-6 PN/2 HF (6ES7155-6AU01-0CN0), SIMATIC ET 200SP IM 155-6 PN/3 HF (6ES7155-6AU30-0CN0), SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants), SIMATIC MICRO-DRIVE PDC, SIMATIC PN/MF Coupler (6ES7158-3MU10-0XA0), SIMATIC PN/PN Coupler (6ES7158-3AD10-0XA0), SIMATIC S7-1200 CPU family (incl. SIPLUS variants), SIMATIC S7-1500 CPU family (incl. related ET 200 CPUs and SIPLUS variants), SIMATIC S7-1500 Software Controller, SIMATIC S7-300 CPU 314C-2 PN/DP (6ES7314-6EH04-0AB0), SIMATIC S7-300 CPU 315-2 PN/DP (6ES7315-2EH14-0AB0), SIMATIC S7-300 CPU 315F-2 PN/DP (6ES7315-2FJ14-0AB0), SIMATIC S7-300 CPU 315T-3 PN/DP (6ES7315-7TJ10-0AB0), SIMATIC S7-300 CPU 317-2 PN/DP (6ES7317-2EK14-0AB0), SIMATIC S7-300 CPU 317F-2 PN/DP (6ES7317-2FK14-0AB0), SIMATIC S7-300 CPU 317T-3 PN/DP (6ES7317-7TK10-0AB0), SIMATIC S7-300 CPU 317TF-3 PN/DP (6ES7317-7UL10-0AB0), SIMATIC S7-300 CPU 319-3 PN/DP (6ES7318-3EL01-0AB0), SIMATIC S7-300 CPU 319F-3 PN/DP (6ES7318-3FL01-0AB0), SIMATIC S7-400 H V6 and below CPU family (incl. SIPLUS variants), SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants), SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants), SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants), SIMATIC TDC CP51M1, SIMATIC TDC CPU555, SIMATIC WinAC RTX 2010 (6ES7671-0RC08-0YA0), SIMATIC WinAC RTX F 2010 (6ES7671-1RC08-0YA0), SINAMICS S/G Control Unit w. PROFINET, SIPLUS ET 200MP IM 155-5 PN HF (6AG1155-5AA00-2AC0), SIPLUS ET 200MP IM 155-5 PN HF (6AG1155-5AA00-7AC0), SIPLUS ET 200MP IM 155-5 PN HF T1 RAIL (6AG2155-5AA00-1AC0), SIPLUS ET 200S IM 151-8 PN/DP CPU (6AG1151-8AB01-7AB0), SIPLUS ET 200S IM 151-8F PN/DP CPU (6AG1151-8FB01-2AB0), SIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU00-2CN0), SIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU00-4CN0), SIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU01-2CN0), SIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU01-7CN0), SIPLUS ET 200SP IM 155-6 PN HF T1 RAIL (6AG2155-6AU00-1CN0), SIPLUS ET 200SP IM 155-6 PN HF T1 RAIL (6AG2155-6AU01-1CN0), SIPLUS ET 200SP IM 155-6 PN HF TX RAIL (6AG2155-6AU01-4CN0), SIPLUS NET PN/PN Coupler (6AG2158-3AD10-4XA0), SIPLUS S7-300 CPU 314C-2 PN/DP (6AG1314-6EH04-7AB0), SIPLUS S7-300 CPU 315-2 PN/DP (6AG1315-2EH14-7AB0), SIPLUS S7-300 CPU 315F-2 PN/DP (6AG1315-2FJ14-2AB0), SIPLUS S7-300 CPU 317-2 PN/DP (6AG1317-2EK14-7AB0), SIPLUS S7-300 CPU 317F-2 PN/DP (6AG1317-2FK14-2AB0). The Interniche-based TCP Stack can be forced to make very expensive calls for every incoming packet which can lead to a denial of service.

The record

CVE
CVE-2019-19300
Published
Apr 14, 2020
Updated
Jul 8, 2025
Vendor
Siemens
Product
SIMATIC TDC CPU555
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Apr 14, 2020CVE publishedPublication date reported by the CVE source.
  2. Jul 8, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <*

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Siemens · SIMATIC TDC CPU555version=0 <*
Siemens · SIMATIC ET 200eco PN, DI 16x24VDC, M12-Lversion=V5.1.1 <V5.1.2
Siemens · SIMATIC S7-300 CPU 317T-3 PN/DPversion=0 <*
Siemens · SIMATIC S7-400 PN/DP CPU familyversion=0 <*
Siemens · SIPLUS ET 200MP IM 155-5 PN HFversion=V4.2.0 <*
Siemens · SIMATIC WinAC RTX F 2010version=0 <*
Siemens · SIPLUS S7-300 CPU 314C-2 PN/DPversion=0 <*
Siemens · SIMATIC ET 200MP IM 155-5 PN HFversion=V4.2.0 <*
Siemens · SIDOOR ATD430Wversion=0 <*
Siemens · SIPLUS NET PN/PN Couplerversion=All versions >= V4.2
Siemens · SIMATIC S7-300 CPU 319-3 PN/DPversion=0 <*
Siemens · SIMATIC MICRO-DRIVE PDCversion=0 <*
Siemens · SIDOOR ATE530S COATEDversion=0 <*
Siemens · SIMATIC S7-1500 CPUversion=All versions < V2.0
Siemens · SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants)version=0 <V8.3
Siemens · SIMATIC S7-300 CPU 314C-2 PN/DPversion=0 <*
Siemens · SIMATIC ET 200SP IM 155-6 PN HFversion=V4.2.0 <*
Siemens · SIMATIC ET 200SP Open Controller CPU 1515SP PC2version=0 <V2.0
Siemens · SIMATIC ET 200S IM 151-8F PN/DP CPUversion=0 <*
Siemens · SIMATIC ET 200eco PN, DI 8x24VDC, M12-Lversion=V5.1.1 <V5.1.2
Siemens · SIMATIC ET 200SP IM 155-6 PN HAversion=0 <*
Siemens · SIPLUS S7-300 CPU 315F-2 PN/DPversion=0 <*
Siemens · SIMATIC S7-300 CPU 319F-3 PN/DPversion=0 <*
Siemens · SIMATIC ET 200SP IM 155-6 PN/2 HFversion=V4.2.0 <*
Siemens · SIMATIC ET 200eco PN, AI 8xRTD/TC, M12-Lversion=V5.1.1 <V5.1.2
Siemens · SIPLUS S7-300 CPU 317F-2 PN/DPversion=0 <*
Siemens · SIMATIC PN/MF Couplerversion=0 <*
Siemens · SIPLUS ET 200S IM 151-8F PN/DP CPUversion=0 <*
Siemens · SIMATIC S7-300 CPU 315F-2 PN/DPversion=0 <*
Siemens · SIMATIC WinAC RTX 2010version=0 <*
Siemens · SIMATIC S7-400 H CPU familyversion=0 <*
Siemens · SIPLUS ET 200MP IM 155-5 PN HF T1 RAILversion=V4.2.0 <*
Siemens · SIPLUS ET 200SP IM 155-6 PN HFversion=V4.2.0 <*
Siemens · SIMATIC S7-410 CPU familyversion=0 <V10.2
Siemens · SIMATIC S7-1500 Software Controllerversion=All versions < V2.0
Siemens · SIMATIC ET 200SP IM 155-6 PN/3 HFversion=V4.2.0 <*
Siemens · SIMATIC ET 200SP Open Controller CPU 1515SP PCversion=0 <V2.0
Siemens · SIMATIC ET 200SP IM 155-6 MF HFversion=0 <*
Siemens · SIMATIC S7-300 CPU 315T-3 PN/DPversion=0 <*
Siemens · SIMATIC ET 200AL IM 157-1 PNversion=0 <*
Siemens · SIMATIC ET 200eco PN DQ 8x24VDC/2A M12-Lversion=V5.1.1 <V5.1.2
Siemens · SIMATIC ET 200pro IM 154-8FX PN/DP CPUversion=0 <*
Siemens · Development/Evaluation Kits for PROFINET IO: EK-ERTEC 200Pversion=0 <*
Siemens · SIMATIC ET200ecoPN DIQ 16x24VDC/2A M12-Lversion=V5.1.1 <V5.1.3
Siemens · SIMATIC S7-300 CPU 315-2 PN/DPversion=0 <*
Siemens · SIMATIC S7-1200 CPUversion=All versions < V4.4.0
Siemens · SIPLUS ET 200S IM 151-8 PN/DP CPUversion=0 <*
Siemens · SINAMICS S/G Control Unit with PROFINETversion=0 <*
Siemens · SIPLUS S7-300 CPU 315-2 PN/DPversion=0 <*
Siemens · SIMATIC S7-300 CPU 317F-2 PN/DPversion=0 <*
Siemens · SIPLUS ET 200SP IM 155-6 PN HF T1 RAILversion=V4.2.0 <*
Siemens · SIMATIC S7-300 CPU 317TF-3 PN/DPversion=0 <*
Siemens · SIMATIC TDC CP51M1version=0 <*
Siemens · SIPLUS S7-300 CPU 317-2 PN/DPversion=0 <*
Siemens · SIMATIC ET 200eco PN, DQ 8x24VDC/0,5A, M12-Lversion=V5.1.1 <V5.1.2
Siemens · SIMATIC PN/PN Couplerversion=All versions >= V4.2
Siemens · SIMATIC S7-300 CPU 317-2 PN/DPversion=0 <*
Siemens · SIPLUS ET 200SP IM 155-6 PN HF TX RAILversion=V4.2.0 <*
Siemens · SIMATIC ET 200pro IM 154-8 PN/DP CPUversion=0 <*
Siemens · SIMATIC ET 200S IM 151-8 PN/DP CPUversion=0 <*
Siemens · Development/Evaluation Kits for PROFINET IO: EK-ERTEC 200version=0 <*
Siemens · SIMATIC ET 200pro IM 154-8F PN/DP CPUversion=0 <*

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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