CVE-2021-3287: Zohocorp ManageEngine Opmanager

Critical severity, CVSS 9.8. EPSS: 51.3% chance of exploitation in the next 30 days.

Zoho ManageEngine OpManager before 12.5.329 allows unauthenticated Remote Code Execution due to a general bypass in the deserialization class.

Affected products

• Zohocorp ManageEngine Opmanager: before 12.5 (fixed in 12.5); version 12.5 only

Published 2021-04-22. Last modified 2026-06-17.