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CVE-2019-18336

A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V3.X.17), SIMATIC TDC CP51M1 (All versions < V1.1.8), SIMATIC TDC CPU...

Published: Mar 10, 2020Updated: Jun 2, 2026 Sources: CVE List NVD BDU csafCWE-400
NVD MITRE
7.5CVSSHIGH
EPSS Score
1.7%
Top 26.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-400

Affected Products

SINUMERIK 840D slSiemens AGICS / OT / IoT
SIMATIC S7-300 CPU familySiemens AGICS / OT / IoT
SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants)Siemens AGICS / OT / IoT
SIMATIC TDC CP51M1Siemens AGICS / OT / IoT
SIMATIC TDC CPU555Siemens AGICS / OT / IoT
siemens agcommercialDEEnterprise Softwareaka siemens
and 12 more affected products View all →

Exploitability

Official Patch Available
No detection template yetWe can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://cert-portal.siemens.com/productcert/pdf/ssa-508982.pdf
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-508982.html
cert-portal.siemens.com
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2020/icsa-20-070-02.json
raw.githubusercontent.com
and 7 more references View all →

Timeline

Published
Mar 10, 2020
Last Updated
Jun 2, 2026

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