CVE-2021-20987

Hilscher: EtherNet/IP stack crash for specific CIP service

Description

A denial of service and memory corruption vulnerability was found in Hilscher EtherNet/IP Core V2 prior to V2.13.0.21that may lead to code injection through network or make devices crash without recovery.

Category

8.6
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.37%
Vendor Advisory hilscher.com
Affected: Hilscher EtherNet/IP Core V2
Affected: Pepper+Fuchs PCV/PXV/PGV
Affected: Pepper+Fuchs WCS
Published at:
Updated at:

References

Link Tags
https://kb.hilscher.com/pages/viewpage.action?pageId=108969480 vendor advisory
https://cert.vde.com/en-us/advisories/vde-2021-007 third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-20987?
CVE-2021-20987 has been scored as a high severity vulnerability.
How to fix CVE-2021-20987?
To fix CVE-2021-20987, 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-2021-20987 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-20987 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-2021-20987?
CVE-2021-20987 affects Hilscher EtherNet/IP Core V2, Pepper+Fuchs PCV/PXV/PGV, Pepper+Fuchs WCS.
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