CVE-2021-20706: Nec Clusterpro X

High severity, CVSS 7.5. EPSS: 1.1% chance of exploitation in the next 30 days.

Improper input validation vulnerability in the WebManager CLUSTERPRO X 4.3 for Windows and earlier, EXPRESSCLUSTER X 4.3 for Windows and earlier, CLUSTERPRO X 4.3 SingleServerSafe for Windows and earlier, EXPRESSCLUSTER X 4.3 SingleServerSafe for Windows and earlier allows attacker to remote file upload via network.

Affected products

• Nec Clusterpro X: from 1.0, up to and including 4.3
• Nec Clusterpro X Singleserversafe: from 1.0, up to and including 4.3
• Nec Expresscluster X: from 1.0, up to and including 4.3
• Nec Expresscluster X Singleserversafe: from 1.0, up to and including 4.3

Published 2021-11-03. Last modified 2026-06-17.