Multi-Factor Authentication Bypass in Zohocorp ManageEngine ADSelfService Plus

Executive Summary

CVE-2026-3183 is a broken authentication vulnerability in ManageEngine ADSelfService Plus affecting versions before 6524. It allows attackers with a valid user password to bypass multi-factor authentication (MFA) by exploiting incomplete session-level authentication checks at a sensitive API endpoint. This enables unauthorized access to user accounts and associated privileges.

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Detection Guidance

To detect this vulnerability, check the version of ManageEngine ADSelfService Plus. If the build number is 6523 or earlier, the system is vulnerable. Verify by accessing the system's admin console or checking the installation directory for version details.

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Impact Analysis

If exploited, this vulnerability could allow attackers to gain unauthorized access to your ADSelfService Plus account even if MFA is enabled. This may lead to account takeover, allowing attackers to perform privileged actions or access sensitive data associated with the account.

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Compliance Impact

This vulnerability allows unauthorized access to user accounts by bypassing multi-factor authentication (MFA), which could lead to unauthorized data access or modification. For GDPR, this may result in violations of data protection principles if personal data is exposed. For HIPAA, it could compromise protected health information (PHI) if the system handles such data.

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Mitigation Strategies

Update ManageEngine ADSelfService Plus to build 6524 or later to enforce proper session-level authentication checks and prevent MFA bypass.

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