CVE-2019-18336

Description

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 CPU555 (All versions < V1.1.1), SINUMERIK 840D sl (All versions < V4.8.6), SINUMERIK 840D sl (All versions < V4.94). Specially crafted packets sent to port 102/tcp (Profinet) could cause the affected device to go into defect mode. A restart is required in order to recover the system. Successful exploitation requires an attacker to have network access to port 102/tcp, with no authentication. No user interation is required. At the time of advisory publication no public exploitation of this security vulnerability was known.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.25%
Vendor Advisory siemens.com
Affected: Siemens AG SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants)
Affected: Siemens AG SIMATIC TDC CP51M1
Affected: Siemens AG SIMATIC TDC CPU555
Affected: Siemens AG SINUMERIK 840D sl
Affected: Siemens AG SINUMERIK 840D sl
Published at:
Updated at:

References

Link Tags
https://cert-portal.siemens.com/productcert/pdf/ssa-508982.pdf vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-18336?
CVE-2019-18336 has been scored as a high severity vulnerability.
How to fix CVE-2019-18336?
To fix CVE-2019-18336, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-18336 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-18336 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-18336?
CVE-2019-18336 affects Siemens AG SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants), Siemens AG SIMATIC TDC CP51M1, Siemens AG SIMATIC TDC CPU555, Siemens AG SINUMERIK 840D sl, Siemens AG SINUMERIK 840D sl.
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