Cyberfeed6Updated November 6, 2026.

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Zoho vulnerabilities exploited in attacks

CISA lists 9 Zoho vulnerabilities as exploited in real attacks, and 2 of them are known to be used in ransomware campaigns. Most entries concern ManageEngine, Desktop Central, ManageEngine ServiceDesk Plus (SDP) / SupportCenter Plus, ManageEngine ServiceDesk Plus (SDP).

Zoho flaws exploited in attacks, newest first

Showing the 9 most recently added of 9. Check the vendor notice before you act: it names the fixed versions.

VulnerabilityProductAdded to listSeverityRansomwareFix
CVE-2022-28810Zoho ManageEngine ADSelfService Plus Remote Code Execution VulnerabilityManageEngine2023-03-07Medium (6.8)NoVendor notice
CVE-2022-47966Zoho ManageEngine Multiple Products Remote Code Execution VulnerabilityManageEngine2023-01-23Critical (9.8)YesVendor notice
CVE-2022-35405Zoho ManageEngine Multiple Products Remote Code Execution VulnerabilityManageEngine2022-09-22Critical (9.8)NoVendor notice
CVE-2021-44515Zoho Desktop Central Authentication Bypass VulnerabilityDesktop Central2021-12-10Critical (9.8)No
CVE-2021-44077Zoho ManageEngine ServiceDesk Plus Remote Code Execution VulnerabilityManageEngine ServiceDesk Plus (SDP) / SupportCenter Plus2021-12-01Critical (9.8)No
CVE-2021-37415Zoho ManageEngine ServiceDesk Authentication Bypass VulnerabilityManageEngine ServiceDesk Plus (SDP)2021-12-01Critical (9.8)No
CVE-2021-40539Zoho ManageEngine ADSelfService Plus Authentication Bypass VulnerabilityManageEngine2021-11-03Critical (9.8)Yes
CVE-2020-10189Zoho ManageEngine Desktop Central File Upload VulnerabilityManageEngine2021-11-03Critical (9.8)No
CVE-2019-8394Zoho ManageEngine ServiceDesk Plus (SDP) File Upload VulnerabilityManageEngine2021-11-03High (7.5)No

Source: CISA Known Exploited Vulnerabilities catalog, released 2026-11-04. Severity scores are CVSS where available. "Ransomware" means CISA has marked the flaw as known to be used in ransomware campaigns.

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