CVE-2020-7240

Name: CVE-2020-7240
Creator: NVD / NIST
Published: 2020-01-20T20:15:11.317+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 2.44%

Last modified Jun 17, 2026

CVE-2020-7240 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Meinberg Lantime M300 and M1000 devices allow attackers (with privileges to configure a device) to execute arbitrary OS commands by editing the /config/netconf.cmd script (aka Extended Network Configuration). Note: According to the description, the vulnerability requires a fully authenticated super-user account using a webUI function that allows super users to edit a script supposed to execute OS commands. EPSS estimates a 2.44% chance of exploitation in the next 30 days.

Description

Meinberg Lantime M300 and M1000 devices allow attackers (with privileges to configure a device) to execute arbitrary OS commands by editing the /config/netconf.cmd script (aka Extended Network Configuration). Note: According to the description, the vulnerability requires a fully authenticated super-user account using a webUI function that allows super users to edit a script supposed to execute OS commands. The given weakness enumeration (CWE-78) is not applicable in this case as it refers to abusing functions/input fields not supposed to be accepting OS commands by using 'Special Elements.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

2.44%

82.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Meinbergglobal	Lantime M300 Firmware	All versions
Meinbergglobal	Lantime M1000 Firmware	All versions

References

https://sku11army.blogspot.com/2020/01/heinberg-lantime-m1000-rce.htmlThird Party Advisory
https://sku11army.blogspot.com/2020/01/meinberg-lantime-m1000-rce.htmlExploit, Third Party Advisory
https://wolke.meinberg.de/index.php/s/dKP3PKgFXS6sPRE#pdfviewer
https://sku11army.blogspot.com/2020/01/heinberg-lantime-m1000-rce.htmlThird Party Advisory
https://sku11army.blogspot.com/2020/01/meinberg-lantime-m1000-rce.htmlExploit, Third Party Advisory
https://wolke.meinberg.de/index.php/s/dKP3PKgFXS6sPRE#pdfviewer

Timeline

Published: Jan 20, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-7240?

How severe is CVE-2020-7240?

CVE-2020-7240 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 2.44% probability of exploitation in the next 30 days.

How do I fix CVE-2020-7240?

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-2020-7240?

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

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Source: NVD / NIST