Vulnerability in Schneider-Electric Modicon M340

CVE-2019-6821

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.

EPSS: 0.019 (77.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2019-6821?
CVE-2019-6821 is a medium-severity vulnerability in Schneider-Electric Modicon M340, classified under Use of Insufficiently Random Values. CVSS score: 6.5/10. Published 2019-05-22.
How severe is CVE-2019-6821?
Medium severity. CVSS v3 base score is 6.5 out of 10.