ACTIVELY EXPLOITED

CVE-2021-37415: Zoho ManageEngine ServiceDesk Authentication Bypass Vulnerability

Facts
VendorZoho
ProductManageEngine ServiceDesk Plus (SDP)
Actively exploitedYes
Added to CISA KEV1 Dec 2021
CISA federal deadline15 Dec 2021
Weakness (CWE)CWE-306

Required action (CISA's text)

Apply updates per vendor instructions.

Description (NVD)

Zoho ManageEngine ServiceDesk Plus before 11302 is vulnerable to authentication bypass that allows a few REST-API URLs without authentication

SOURCES

Other Zoho flaws

Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.