CVE-2021-37206

Description

A vulnerability has been identified in SIPROTEC 5 relays with CPU variants CP050 (All versions < V8.80), SIPROTEC 5 relays with CPU variants CP100 (All versions < V8.80), SIPROTEC 5 relays with CPU variants CP300 (All versions < V8.80). Received webpackets are not properly processed. An unauthenticated remote attacker with access to any of the Ethernet interfaces could send specially crafted packets to force a restart of the target device.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.58%
Vendor Advisory siemens.com
Affected: Siemens SIPROTEC 5 relays with CPU variants CP050
Affected: Siemens SIPROTEC 5 relays with CPU variants CP100
Affected: Siemens SIPROTEC 5 relays with CPU variants CP300
Published at:
Updated at:

References

Link Tags
https://cert-portal.siemens.com/productcert/pdf/ssa-500748.pdf patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-37206?
CVE-2021-37206 has been scored as a high severity vulnerability.
How to fix CVE-2021-37206?
To fix CVE-2021-37206, 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-2021-37206 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-37206 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-37206?
CVE-2021-37206 affects Siemens SIPROTEC 5 relays with CPU variants CP050, Siemens SIPROTEC 5 relays with CPU variants CP100, Siemens SIPROTEC 5 relays with CPU variants CP300.
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