CVE-2019-6821

Description

CWE-330: Use of Insufficiently Random Values vulnerability, which could cause the hijacking of the TCP connection when using Ethernet communication in Modicon M580 firmware versions prior to V2.30, and all firmware versions of Modicon M340, Modicon Premium, Modicon Quantum.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.24%
Vendor Advisory schneider-electric.com
Affected: n/a Modicon Controllers, Modicon M580 firmware versions prior to V2.30, and all firmware versions of Modicon M340, Modicon Premium, Modicon Quantum
Published at:
Updated at:

References

Link Tags
https://ics-cert.us-cert.gov/advisories/ICSA-19-136-01 third party advisory us government resource
http://www.securityfocus.com/bid/108366 third party advisory vdb entry
https://www.schneider-electric.com/en/download/document/SEVD-2019-134-03/ patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-6821?
CVE-2019-6821 has been scored as a medium severity vulnerability.
How to fix CVE-2019-6821?
To fix CVE-2019-6821, 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-2019-6821 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-6821 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-2019-6821?
CVE-2019-6821 affects n/a Modicon Controllers, Modicon M580 firmware versions prior to V2.30, and all firmware versions of Modicon M340, Modicon Premium, Modicon Quantum.
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