CVE-2021-40539 on CISA KEV

Zoho ManageEngine ADSelfService Plus version 6113 and prior is vulnerable to REST API authentication bypass with resultant remote code execution.

01What CISA says about this vulnerability

Zoho ManageEngine ADSelfService Plus version 6113 and prior is vulnerable to REST API authentication bypass with resultant remote code execution.

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

• www.manageengine.com — https://www.manageengine.com
• www.manageengine.com — https://www.manageengine.com/products/self-service-password/kb/how-to-fix-authen…
• packetstormsecurity.com — http://packetstormsecurity.com/files/165085/ManageEngine-ADSelfService-Plus-Auth…

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
n	a / n/a	n/a

06Detection

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