CVE-2021-20986

Hilscher: Denial of Service vulnerability in PROFINET IO Device

Description

A Denial of Service vulnerability was found in Hilscher PROFINET IO Device V3 in versions prior to V3.14.0.7. This may lead to unexpected loss of cyclic communication or interruption of acyclic communication.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.47%
Vendor Advisory hilscher.com
Affected: Hilscher PROFINET IO Device
Affected: Pepper+Fuchs PCV/PXV/PGV
Affected: Pepper+Fuchs PXV/PGV B28 Profisafe
Affected: Pepper+Fuchs OHV
Affected: Pepper+Fuchs OIT
Affected: Pepper+Fuchs PHA
Affected: Pepper+Fuchs WCS
Published at:
Updated at:

References

Link Tags
https://kb.hilscher.com/display/ISMS/2020-12-03+Denial+of+Service+vulnerability+in+PROFINET+IO+Device vendor advisory
https://cert.vde.com/en-us/advisories/vde-2021-006 third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-20986?
CVE-2021-20986 has been scored as a high severity vulnerability.
How to fix CVE-2021-20986?
To fix CVE-2021-20986, 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-2021-20986 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-20986 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-2021-20986?
CVE-2021-20986 affects Hilscher PROFINET IO Device, Pepper+Fuchs PCV/PXV/PGV, Pepper+Fuchs PXV/PGV B28 Profisafe, Pepper+Fuchs OHV, Pepper+Fuchs OIT, Pepper+Fuchs PHA, Pepper+Fuchs WCS.
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