CVE-2019-6808

Name: CVE-2019-6808
Creator: NVD / NIST
Published: 2019-05-22T21:29:00.697+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 8.16%

Last modified Jun 17, 2026

CVE-2019-6808 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A CWE-284: Improper Access Control vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause a remote code execution by overwriting configuration settings of the controller over Modbus.. EPSS estimates a 8.16% chance of exploitation in the next 30 days.

Description

A CWE-284: Improper Access Control vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause a remote code execution by overwriting configuration settings of the controller over Modbus.

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

8.16%

94.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-306

Affected Software

Vendor	Product	Versions
Schneider-Electric	Modicon Premium Firmware	<= 3.20
Schneider-Electric	Modicon Quantum Firmware	<= 3.60
Schneider-Electric	Modicon M340 Firmware	< 3.10
Schneider-Electric	Modicon M580 Firmware	< 2.90

References

https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/Mitigation, Vendor Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2019-0771Exploit, Third Party Advisory
https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/Mitigation, Vendor Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2019-0771Exploit, Third Party Advisory

Timeline

Published: May 22, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-6808?

How severe is CVE-2019-6808?

CVE-2019-6808 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 8.16% probability of exploitation in the next 30 days.

How do I fix CVE-2019-6808?

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-2019-6808?

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

Scan your code now

Source: NVD / NIST