CVE-2021-40539
CVSS v3
9.8
CRITICAL
EPSS Score
94.4 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
Description
Zoho ManageEngine ADSelfService Plus version 6113 and prior is vulnerable to REST API authentication bypass with resultant remote code execution.
CISA Known Exploited Vulnerability
- Date Added
- 2021-11-03
- Patch Due Date
- 2021-11-17
- Ransomware Use
- Known
Technical details
- Published
- 2021-09-07
Frequently asked questions
What is CVE-2021-40539?
Zoho ManageEngine ADSelfService Plus version 6113 and prior is vulnerable to REST API authentication bypass with resultant remote code execution.
Is CVE-2021-40539 actively exploited?
Yes. CVE-2021-40539 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 11/17/2021.
What is the CVSS score for CVE-2021-40539?
CVE-2021-40539 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2021-40539 affecting your environment?
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