Zoho ManageEngine ServiceDesk Authentication Bypass Vulnerability

Added to KEV
2021-12-01
Federal due date
2021-12-15
Vendor
Zoho
Product
ManageEngine ServiceDesk Plus (SDP)
EPSS
99.8th percentile (score 0.928, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Unknown
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2021-37415

CISA short description

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

Required action

Apply updates per vendor instructions.

EPSS percentile is the FIRST.org exploit-probability ranking as of the date noted above; it moves daily. CVSS reflects NVD's analysis at time of publication.