CVE-2020-15791

Description

A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC S7-400 CPU family (incl. SIPLUS variants) (All versions), SIMATIC WinAC RTX (F) 2010 (All versions), SINUMERIK 840D sl (All versions). The authentication protocol between a client and a PLC via port 102/tcp (ISO-TSAP) insufficiently protects the transmitted password. This could allow an attacker that is able to intercept the network traffic to obtain valid PLC credentials.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.08%
Vendor Advisory siemens.com
Affected: Siemens SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants)
Affected: Siemens SIMATIC S7-400 CPU family (incl. SIPLUS variants)
Affected: Siemens SIMATIC WinAC RTX (F) 2010
Affected: Siemens SINUMERIK 840D sl
Published at:
Updated at:

References

Link Tags
https://cert-portal.siemens.com/productcert/pdf/ssa-381684.pdf vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-15791?
CVE-2020-15791 has been scored as a medium severity vulnerability.
How to fix CVE-2020-15791?
To fix CVE-2020-15791, 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-2020-15791 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-15791 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-2020-15791?
CVE-2020-15791 affects Siemens SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants), Siemens SIMATIC S7-400 CPU family (incl. SIPLUS variants), Siemens SIMATIC WinAC RTX (F) 2010, Siemens SINUMERIK 840D sl.
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