CVE-2025-36373 is a vulnerability classified under CWE-497 (Exposure of Sensitive System Information to an Unauthorized Control Sphere) affecting IBM DataPower Gateway versions 10.5.0 through 10.6.5.0, including 10.6CD 10.6.1.0. The issue arises because the gateway improperly discloses sensitive system information from one domain to an administrative user operating in another domain. IBM DataPower Gateway is a specialized security and integration appliance used to manage, secure, and optimize web, API, and mobile workloads. The vulnerability violates domain isolation, a core security principle designed to prevent cross-domain data leakage. Exploitation requires the attacker to have administrative privileges on the device, which limits the attack surface but still poses a risk if credentials are compromised or insider threats exist. The vulnerability does not require user interaction and can be triggered remotely over the network. The CVSS v3.1 base score is 4.1, indicating medium severity, with the vector indicating network attack vector (AV:N), low attack complexity (AC:L), high privileges required (PR:H), no user interaction (UI:N), and impact limited to confidentiality (C:L), with no impact on integrity or availability. No patches or exploits are currently publicly available, but the vulnerability is published and should be addressed promptly.

The primary impact of CVE-2025-36373 is the unauthorized disclosure of sensitive system information across domain boundaries within IBM DataPower Gateway appliances. This leakage can aid attackers in reconnaissance, facilitating further attacks such as privilege escalation or lateral movement within the network. Although the vulnerability requires administrative privileges, if credentials are compromised or an insider threat exists, attackers can gain access to information that should be isolated per domain. This undermines the security model of domain separation and could expose configuration details, system internals, or sensitive operational data. Organizations relying on IBM DataPower Gateway for securing APIs, web services, and integration points may face increased risk of targeted attacks or data breaches. The impact is limited to confidentiality, with no direct effect on system integrity or availability, but the exposure of sensitive information can have cascading effects on overall security posture. The absence of known exploits reduces immediate risk but does not eliminate the threat, especially in high-value environments.

To mitigate CVE-2025-36373, organizations should implement the following specific measures: 1) Restrict administrative access to IBM DataPower Gateway devices using strong authentication methods such as multi-factor authentication (MFA) and limit access to trusted personnel only. 2) Monitor and audit administrative activities and access logs for unusual or unauthorized behavior to detect potential insider threats or credential compromise. 3) Apply any available IBM patches or updates addressing this vulnerability as soon as they are released; if no patch is currently available, engage with IBM support for recommended workarounds or mitigations. 4) Review and enforce strict domain separation policies within the DataPower Gateway configuration to minimize cross-domain information exposure. 5) Employ network segmentation and firewall rules to limit access to management interfaces of DataPower appliances to trusted networks and administrators. 6) Conduct regular security assessments and penetration testing focusing on administrative interfaces and domain isolation controls. 7) Educate administrators on the risks of credential compromise and enforce strong password policies. These targeted actions go beyond generic advice by focusing on administrative access control, monitoring, and domain isolation enforcement specific to the affected product.