CVE-2017-6021

Name: CVE-2017-6021
Creator: NVD / NIST
Published: 2018-05-14T14:29:00.193+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.71%

Last modified Jun 17, 2026

CVE-2017-6021 is a vulnerability of currently unknown severity. In Schneider Electric ClearSCADA 2014 R1 (build 75.5210) and prior, 2014 R1.1 (build 75.5387) and prior, 2015 R1 (build 76.5648) and prior, and 2015 R2 (build 77.5882) and prior, an attacker with network access to the ClearSCADA server can send specially crafted sequences of commands and data packets to the ClearSCADA server that can cause the ClearSCADA server process and ClearSCADA communications driver processes to terminate. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).. EPSS estimates a 1.71% chance of exploitation in the next 30 days.

Description

In Schneider Electric ClearSCADA 2014 R1 (build 75.5210) and prior, 2014 R1.1 (build 75.5387) and prior, 2015 R1 (build 76.5648) and prior, and 2015 R2 (build 77.5882) and prior, an attacker with network access to the ClearSCADA server can send specially crafted sequences of commands and data packets to the ClearSCADA server that can cause the ClearSCADA server process and ClearSCADA communications driver processes to terminate. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Metrics

EPSS Probability

1.71%

74.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Aveva	Clearscada	<= 2010	—
Schneider-Electric	Clearscada	2014	R1
Schneider-Electric	Clearscada	2015	R1

References

http://www.securityfocus.com/bid/96768Third Party Advisory, VDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-17-068-01Third Party Advisory, US Government Resource
http://www.securityfocus.com/bid/96768Third Party Advisory, VDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-17-068-01Third Party Advisory, US Government Resource

Timeline

Published: May 14, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-6021?

How severe is CVE-2017-6021?

Severity scoring for CVE-2017-6021 is pending analysis. The EPSS model estimates a 1.71% probability of exploitation in the next 30 days.

How do I fix CVE-2017-6021?

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-2017-6021?

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

Scan your code now

Source: NVD / NIST