CVE-2021-44515
Published: December 10, 2021
Official Description
Zoho Desktop Central contains an authentication bypass vulnerability that could allow an attacker to execute arbitrary code in the Desktop Central MSP server.
CISA KEV Advisory
Zoho Desktop Central Authentication Bypass Vulnerability
Zoho Desktop Central contains an authentication bypass vulnerability that could allow an attacker to execute arbitrary code in the Desktop Central MSP server.
Apply updates per vendor instructions.
Risk Analysis
This flaw in Zoho Desktop Central allows an attacker to bypass authentication and execute arbitrary code on the Desktop Central MSP server. With an EPSS score of 0.94363, exploitation is highly probable, and its presence in the KEV catalog confirms active exploitation.
This vulnerability is actively being exploited in the wild. The authentication bypass allows for remote code execution without prior authentication.
Administrators should apply the latest security updates for Zoho Desktop Central to address this authentication bypass and prevent arbitrary code execution. Review and strengthen access controls for the Desktop Central MSP server.
Technical Analysis
CVE-2021-44515 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-2021-44515 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-2021-44515 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