CVE-2021-27983

9.8 criticalEPSS 3.6%

Critical (9.8) in max-3000 maxsite cms. 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.

Severity

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 3.6% chance of exploitation in the next 30 days; higher than 89% of CVEs (scores of 2026-11-01)
Published: 2021-12-10
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19