What’s Vulnerable › Vulnerabilities

CVE-2019-6841

• Severity: medium (CVSS 4.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 23.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-10-29 · updated 2026-06-17
• Weakness: CWE-755

Description

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 firmware with no firmware image inside the package using FTP protocol.

Affected products

• Schneider-Electric Modicon 140Cra Firmware: all versions
• Schneider-Electric Modicon Bmxcra Firmware: all versions
• Schneider-Electric Modicon M340 Firmware: all versions
• Schneider Electric SE Modicon M580: all versions

References

• https://www.se.com/ww/en/download/document/SEVD-2019-281-02/
• https://www.se.com/ww/en/download/document/SEVD-2019-281-02/

Get alerted when CVE-2019-6841 or the next vulnerability affects your stack