CVE-2021-20850: Alfasado Powercms

Critical severity, CVSS 9.8. EPSS: 1.5% chance of exploitation in the next 30 days.

PowerCMS XMLRPC API of PowerCMS 5.19 and earlier, PowerCMS 4.49 and earlier, PowerCMS 3.295 and earlier, and PowerCMS 2 Series (End-of-Life, EOL) allows a remote attacker to execute an arbitrary OS command via unspecified vectors.

Affected products

• Alfasado Powercms: from 2.0, up to and including 2.058; from 3.01, up to and including 3.295; from 4.0, up to and including 4.49; from 5.0, up to and including 5.19

Published 2021-11-24. Last modified 2026-06-17.