CISA-confirmed known exploited vulnerability

CVE-2021-37415

Zoho ManageEngine ServiceDesk Authentication Bypass Vulnerability

Zoho · ManageEngine ServiceDesk Plus (SDP)

Vulnerability details

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

Added to CISA KEV: 2021-12-01

Ransomware campaign use: Unknown

CISA due date: 2021-12-15

Defensive guidance from CISA

Apply updates per vendor instructions.

This is the source's required-action field, not an independently validated patch procedure. Refer to the vendor for exact affected versions and fixes.

Source catalog date: 2026-11-06T19:44:45.1797Z · Last retrieved: 2026-11-06 21:02:26 UTC

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