CVE-2025-11250 is a critical authentication bypass vulnerability identified in Zohocorp's ManageEngine ADSelfService Plus, a widely used identity and access management tool designed to facilitate self-service password resets and user account management. The vulnerability stems from improper filter configurations within the software that enable an attacker to spoof authentication tokens or requests, effectively bypassing the authentication mechanism without needing any privileges or user interaction. This flaw is classified under CWE-290 (Authentication Bypass by Spoofing). The vulnerability affects all versions prior to 6519, and the CVSS v3.1 base score is 9.1, reflecting its critical severity. The attack vector is network-based (AV:N), requires no privileges (PR:N), and no user interaction (UI:N), making it highly exploitable remotely. Successful exploitation allows an attacker to gain unauthorized access to user accounts, compromising confidentiality and integrity of sensitive identity data managed by the system. Although no known exploits have been reported in the wild yet, the potential for abuse is significant given the critical role of ADSelfService Plus in enterprise environments. The vulnerability does not impact system availability directly but could facilitate further attacks or data breaches. The lack of available patches at the time of reporting necessitates immediate attention to configuration reviews and monitoring for suspicious authentication attempts. Organizations relying on ManageEngine ADSelfService Plus should prepare to deploy patches promptly once released and consider additional compensating controls to detect and prevent spoofing attempts.

For European organizations, the impact of CVE-2025-11250 is substantial due to the critical nature of identity and access management systems in securing enterprise environments. Exploitation could lead to unauthorized access to user accounts, enabling attackers to view or modify sensitive information, escalate privileges, or move laterally within networks. This threatens the confidentiality and integrity of corporate data and user credentials. Given the widespread use of ManageEngine products in Europe, particularly in sectors such as finance, healthcare, and government, the vulnerability could facilitate targeted attacks against high-value assets. The absence of required privileges or user interaction lowers the barrier for attackers, increasing the risk of automated or mass exploitation campaigns. Although availability is not directly affected, the breach of authentication controls could lead to further disruptive attacks or compliance violations under GDPR and other data protection regulations. Organizations may face reputational damage, regulatory penalties, and operational disruptions if the vulnerability is exploited.

1. Immediate patching: Apply the official security update from Zohocorp as soon as it becomes available to remediate the improper filter configurations causing the authentication bypass. 2. Configuration audit: Review and harden filter settings within ADSelfService Plus to ensure that authentication requests are properly validated and spoofing attempts are blocked. 3. Network segmentation: Restrict access to ADSelfService Plus management interfaces to trusted internal networks or VPNs to reduce exposure to external attackers. 4. Enhanced monitoring: Implement detailed logging and anomaly detection for authentication events to identify suspicious access patterns indicative of spoofing or bypass attempts. 5. Multi-factor authentication (MFA): Enforce MFA on all user accounts accessing ADSelfService Plus to add an additional layer of security beyond the vulnerable authentication mechanism. 6. Incident response readiness: Prepare response plans to quickly isolate and remediate affected systems if exploitation is detected. 7. Vendor communication: Maintain close contact with Zohocorp for updates on patches and advisories. 8. User education: Inform administrators and users about the risk and signs of compromise related to this vulnerability.