CVE-2021-47938: Impresscms

High severity, CVSS 8.8. EPSS: 0.6% chance of exploitation in the next 30 days.

ImpressCMS 1.4.2 contains a remote code execution vulnerability in the autotasks administrative interface that allows authenticated attackers to execute arbitrary PHP code by injecting malicious code into the sat_code parameter. Attackers can authenticate, submit a POST request to /modules/system/admin.php?fct=autotasks&op=mod with crafted sat_code containing PHP commands, which creates an executable file that accepts arbitrary commands via GET parameters.

Affected products

• Impresscms Impresscms: version 1.4.2 only

Published 2026-05-10. Last modified 2026-10-06.