Zoho ManageEngine
YES - ON THE CISA KEV LIST
CVE-2021-40539
Zoho ManageEngine ADSelfService Plus Authentication Bypass Vulnerability
overdue since 2021-11-17
Zoho: 9 entries (0.5% of all KEV entries are from this vendor); 0 added in 2026.
BOD 26-04 note: this is the date printed in the CISA catalog. A federal agency's actual deadline is set by its SSVC tier - Act (3 days), Attend (14 days), Track (60 days), or the next scheduled upgrade - counted from the KEV listing date or the date the vulnerability is identified in its environment, whichever comes first. Use the tier helper on each CVE page for your own window.
Your BOD 26-04 window (SSVC tier helper)
Your remediation window ends:
Description
Zoho ManageEngine ADSelfService Plus contains an authentication bypass vulnerability affecting the REST API URLs which allow for remote code execution.
Required action (CISA)
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-40539
References
Other KEV entries for this vendor: Zoho
- CVE-2022-28810 - ManageEngine (2023-03-07)
- CVE-2022-47966 - ManageEngine (2023-01-23)
- CVE-2022-35405 - ManageEngine (2022-09-22)
- CVE-2021-44515 - Desktop Central (2021-12-10)
- CVE-2021-37415 - ManageEngine ServiceDesk Plus (SDP) (2021-12-01)
- CVE-2021-44077 - ManageEngine ServiceDesk Plus (SDP) / SupportCenter Plus (2021-12-01)
- CVE-2020-10189 - ManageEngine (2021-11-03)
- CVE-2019-8394 - ManageEngine (2021-11-03)
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