What’s Vulnerable › Vulnerabilities

CVE-2021-37421

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-08-30 · updated 2026-06-17
• Weakness: CWE-345

Description

Zoho ManageEngine ADSelfService Plus 6103 and prior is vulnerable to admin portal access-restriction bypass.

Affected products

• ManageEngine ADSelfService Plus: before 6.1; 6.1, 6.1-6100, 6.1-6101, 6.1-6102, 6.1-6103 — fixed in 6.1

How to fix

Upgrade to a fixed version: ManageEngine ADSelfService Plus 6.1. Check the vendor advisory for mitigations.

References

• https://blog.stmcyber.com/vulns/cve-2021-37421/
• https://pitstop.manageengine.com/portal/en/community/topic/adselfservice-plus-6104-released-with-an-important-security-fixes
• https://blog.stmcyber.com/vulns/cve-2021-37421/
• https://pitstop.manageengine.com/portal/en/community/topic/adselfservice-plus-6104-released-with-an-important-security-fixes

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