CVE-2021-27983: Max-3000 Maxsite CMS

Critical severity, CVSS 9.8. EPSS: 3.6% chance of exploitation in the next 30 days.

Remote Code Execution (RCE) vulnerability exists in MaxSite CMS v107.5 via the Documents page.

Affected products

• Max-3000 Maxsite CMS: version 107.5 only

Published 2021-12-10. Last modified 2026-06-17.