CVE-2012-0931: Schneider Electric Modicon Quantum PLC

Critical severity, CVSS 9.8. EPSS: 4.8% chance of exploitation in the next 30 days.

Schneider Electric Modicon Quantum PLC does not perform authentication between the Unity software and PLC, which allows remote attackers to cause a denial of service or possibly execute arbitrary code via unspecified vectors.

Affected products

Published 2012-01-28. Last modified 2026-06-16.