CVE-2017-6021: Aveva Clearscada

High severity, CVSS 7.5. EPSS: 1.7% chance of exploitation in the next 30 days.

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).

Affected products

• Aveva Clearscada: up to and including 2010
• Schneider Electric Clearscada: version 2014 only; version 2015 only

Published 2018-05-14. Last modified 2026-06-17.