CVE-2019-13940

CVE-2019-13940

Published Feb 11, 2020 · Updated Aug 5, 2024

A vulnerability has been identified in SIMATIC ET 200pro IM154-8 PN/DP CPU (All versions < V3.X.17), SIMATIC ET 200pro IM154-8F PN/DP CPU (All versions < V3.X.17), SIMATIC ET 200pro IM154-8FX PN/DP CPU (All versions < V3.X.17), SIMATIC ET 200S IM151-8 PN/DP CPU (All versions < V3.X.17), SIMATIC ET 200S IM151-8F PN/DP CPU (All versions < V3.X.17), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions < V4.1), SIMATIC S7-300 CPU 314C-2 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 315-2 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 315F-2 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 315T-3 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 317-2 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 317F-2 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 317T-3 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 317TF-3 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 319-3 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 319F-3 PN/DP (All versions < V3.X.17), SIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants) (All versions), SIMATIC WinAC RTX 2010 (All versions), SIMATIC WinAC RTX F 2010 (All versions), SIPLUS ET 200S IM151-8 PN/DP CPU (All versions < V3.X.17), SIPLUS ET 200S IM151-8F PN/DP CPU (All versions < V3.X.17), SIPLUS S7-300 CPU 314C-2 PN/DP (All versions < V3.X.17), SIPLUS S7-300 CPU 315-2 PN/DP (All versions < V3.X.17), SIPLUS S7-300 CPU 315F-2 PN/DP (All versions < V3.X.17), SIPLUS S7-300 CPU 317-2 PN/DP (All versions < V3.X.17), SIPLUS S7-300 CPU 317F-2 PN/DP (All versions < V3.X.17). Affected devices contain a vulnerability that could cause a denial of service condition of the web server by sending specially crafted HTTP requests to ports 80/tcp and 443/tcp.

CVSS severityUnavailable
Unscored
EPSS probability1.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

A vulnerability has been identified in SIMATIC ET 200pro IM154-8 PN/DP CPU (All versions < V3.X.17), SIMATIC ET 200pro IM154-8F PN/DP CPU (All versions < V3.X.17), SIMATIC ET 200pro IM154-8FX PN/DP CPU (All versions < V3.X.17), SIMATIC ET 200S IM151-8 PN/DP CPU (All versions < V3.X.17), SIMATIC ET 200S IM151-8F PN/DP CPU (All versions < V3.X.17), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions < V4.1), SIMATIC S7-300 CPU 314C-2 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 315-2 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 315F-2 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 315T-3 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 317-2 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 317F-2 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 317T-3 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 317TF-3 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 319-3 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 319F-3 PN/DP (All versions < V3.X.17), SIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants) (All versions), SIMATIC WinAC RTX 2010 (All versions), SIMATIC WinAC RTX F 2010 (All versions), SIPLUS ET 200S IM151-8 PN/DP CPU (All versions < V3.X.17), SIPLUS ET 200S IM151-8F PN/DP CPU (All versions < V3.X.17), SIPLUS S7-300 CPU 314C-2 PN/DP (All versions < V3.X.17), SIPLUS S7-300 CPU 315-2 PN/DP (All versions < V3.X.17), SIPLUS S7-300 CPU 315F-2 PN/DP (All versions < V3.X.17), SIPLUS S7-300 CPU 317-2 PN/DP (All versions < V3.X.17), SIPLUS S7-300 CPU 317F-2 PN/DP (All versions < V3.X.17). Affected devices contain a vulnerability that could cause a denial of service condition of the web server by sending specially crafted HTTP requests to ports 80/tcp and 443/tcp.

Beyond the web service, no other functions or interfaces are affected by the denial of service condition.

The record

CVE
CVE-2019-13940
Published
Feb 11, 2020
Updated
Aug 5, 2024
Vendor
Siemens
Product
SIMATIC ET 200S IM151-8F PN/DP CPU
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Feb 11, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=All versions < V3.X.17

What conditions does exploitation require?

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

What is affected?

Siemens · SIMATIC ET 200S IM151-8F PN/DP CPUversion=All versions < V3.X.17
Siemens · SIMATIC S7-300 CPU 317T-3 PN/DPversion=All versions < V3.X.17
Siemens · SIMATIC WinAC RTX F 2010version=All versions
Siemens · SIPLUS S7-300 CPU 314C-2 PN/DPversion=All versions < V3.X.17
Siemens · SIMATIC S7-300 CPU 319-3 PN/DPversion=All versions < V3.X.17
Siemens · SIMATIC S7-300 CPU 314C-2 PN/DPversion=All versions < V3.X.17
Siemens · SIPLUS S7-300 CPU 315F-2 PN/DPversion=All versions < V3.X.17
Siemens · SIMATIC ET 200pro IM154-8FX PN/DP CPUversion=All versions < V3.X.17
Siemens · SIMATIC S7-300 CPU 319F-3 PN/DPversion=All versions < V3.X.17
Siemens · SIPLUS S7-300 CPU 317F-2 PN/DPversion=All versions < V3.X.17
Siemens · SIMATIC S7-400 PN/DP CPUversion=All versions
Siemens · SIMATIC S7-300 CPU 315F-2 PN/DPversion=All versions < V3.X.17
Siemens · SIMATIC WinAC RTX 2010version=All versions
Siemens · SIPLUS ET 200S IM151-8F PN/DP CPUversion=All versions < V3.X.17
Siemens · SIPLUS ET 200S IM151-8 PN/DP CPUversion=All versions < V3.X.17
Siemens · SIMATIC S7-300 CPU 315T-3 PN/DPversion=All versions < V3.X.17
Siemens · SIMATIC ET 200S IM151-8 PN/DP CPUversion=All versions < V3.X.17
Siemens · SIMATIC ET 200pro IM154-8F PN/DP CPUversion=All versions < V3.X.17
Siemens · SIMATIC S7-300 CPU 315-2 PN/DPversion=All versions < V3.X.17
Siemens · SIMATIC S7-1200 CPUversion=All versions < V4.1
Siemens · SIPLUS S7-300 CPU 315-2 PN/DPversion=All versions < V3.X.17
Siemens · SIMATIC S7-300 CPU 317F-2 PN/DPversion=All versions < V3.X.17
Siemens · SIMATIC S7-300 CPU 317TF-3 PN/DPversion=All versions < V3.X.17
Siemens · SIPLUS S7-300 CPU 317-2 PN/DPversion=All versions < V3.X.17
Siemens · SIMATIC S7-300 CPU 317-2 PN/DPversion=All versions < V3.X.17
Siemens · SIMATIC ET 200pro IM154-8 PN/DP CPUversion=All versions < V3.X.17

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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