A CWE-755: Improper Handling of Exceptional Conditions vulnerability exists in Modicon M580 with firmware (version prior to V3.10), Modicon M340 (all firmware versions), and Modicon BMxCRA and 140CRA modules (all firmware versions), which could cause a Denial of Service attack on the PLC when upgrading the controller with an empty firmware package using FTP protocol.
Published 2019-10-29 19:15:22
Updated 2022-02-03 15:58:53
View at NVD,   CVE.org
Vulnerability category: Denial of service

Products affected by CVE-2019-6843

Exploit prediction scoring system (EPSS) score for CVE-2019-6843

0.08%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 34 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-6843

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.0
MEDIUM AV:N/AC:L/Au:S/C:N/I:N/A:P
8.0
2.9
NIST
4.9
MEDIUM CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
1.2
3.6
NIST

CWE ids for CVE-2019-6843

References for CVE-2019-6843

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