CVE-2021-37415
Published: December 1, 2021
Official Description
Zoho ManageEngine ServiceDesk Plus before 11302 is vulnerable to authentication bypass that allows a few REST-API URLs without authentication
CISA KEV Advisory
Zoho ManageEngine ServiceDesk Authentication Bypass Vulnerability
Zoho ManageEngine ServiceDesk Plus before 11302 is vulnerable to authentication bypass that allows a few REST-API URLs without authentication
Apply updates per vendor instructions.
Risk Analysis
This authentication bypass vulnerability in Zoho ManageEngine ServiceDesk Plus before version 11302 allows unauthenticated access to certain REST-API URLs. The high EPSS score of 0.91971 and its presence in CISA's KEV catalog indicate a very high likelihood of exploitation, making this an urgent concern.
Active exploitation of this vulnerability has been observed in the wild, and it is listed in CISA's Known Exploited Vulnerabilities catalog. It is remotely exploitable without authentication.
Apply the latest updates to Zoho ManageEngine ServiceDesk Plus, specifically version 11302 or later. Implement strong access controls and monitor API access logs for suspicious activity.
Technical Analysis
CVE-2021-37415 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2021-37415 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-37415 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1