CVE-2019-6840

Name: CVE-2019-6840
Creator: NVD / NIST
Published: 2019-09-17T20:15:12.843+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.15%

Last modified Jun 17, 2026

CVE-2019-6840 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A Format String: CWE-134 vulnerability exists in U.motion Server (MEG6501-0001 - U.motion KNX server, MEG6501-0002 - U.motion KNX Server Plus, MEG6260-0410 - U.motion KNX Server Plus, Touch 10, MEG6260-0415 - U.motion KNX Server Plus, Touch 15), which could allow an attacker to send a crafted message to the target server, thereby causing arbitrary commands to be executed.. EPSS estimates a 1.15% chance of exploitation in the next 30 days.

Description

A Format String: CWE-134 vulnerability exists in U.motion Server (MEG6501-0001 - U.motion KNX server, MEG6501-0002 - U.motion KNX Server Plus, MEG6260-0410 - U.motion KNX Server Plus, Touch 10, MEG6260-0415 - U.motion KNX Server Plus, Touch 15), which could allow an attacker to send a crafted message to the target server, thereby causing arbitrary commands to be executed.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.15%

62.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Schneider-Electric	Meg6501-0001 Firmware	< 1.3.7
Schneider-Electric	Meg6501-0002 Firmware	< 1.3.7
Schneider-Electric	Meg6260-0410 Firmware	< 1.3.7
Schneider-Electric	Meg6260-0415 Firmware	< 1.3.7

References

https://www.schneider-electric.com/ww/en/download/document/SEVD-2019-253-01Vendor Advisory
https://www.schneider-electric.com/ww/en/download/document/SEVD-2019-253-01Vendor Advisory

Timeline

Published: Sep 17, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-6840?

How severe is CVE-2019-6840?

CVE-2019-6840 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.15% probability of exploitation in the next 30 days.

How do I fix CVE-2019-6840?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-6840?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST