Description

IBM Db2 Mirror for i 7.4, 7.5, and 7.6 could allow a remote attacker to obtain sensitive information due to improper request validation.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "5.4",
  "pubDate": "2026-09-14T20:16:41.317Z",
  "pubdate": "2026-09-14T20:16:41.317Z",
  "executiveSummary": "IBM Db2 Mirror for i, specifically in versions 7.4, 7.5, and 7.6, is susceptible to an information disclosure vulnerability stemming from improper request validation. This security flaw allows a remote, unauthenticated attacker to exploit the request processing logic to gain unauthorized access to sensitive information stored or processed by the system.\nThe vulnerability type is classified as an information disclosure issue resulting from failed input or request sanitization. By sending specially crafted requests, an attacker can bypass intended security controls to exfiltrate confidential data.\nThe impact of this vulnerability is significant, as it threatens the confidentiality of sensitive system data. Exposure of such information could lead to further exploitation, providing adversaries with intelligence necessary for deeper system compromise or reconnaissance. The vulnerability is network-accessible, meaning that if the IBM Db2 Mirror interface is exposed, an attacker can conduct exploitation remotely without prior authentication. Organizations utilizing the affected versions of IBM Db2 Mirror for i should prioritize applying security updates or implementing compensatory controls to mitigate the risk of data exfiltration and potential breach.",
  "technicalDetails": "The root cause of this vulnerability lies in the insufficient validation of incoming requests within the IBM Db2 Mirror for i component. The application fails to properly verify or constrain the parameters of requests directed at specific service interfaces. This oversight permits the processing of malformed or unexpected request structures, which can be manipulated to interact with system components in an unauthorized manner.\nIn terms of the exploitation method, the attacker interacts with the network-exposed management or communication interface utilized by Db2 Mirror. By crafting an invalid request payload that bypasses the existing request validation logic, the attacker induces the application into a state where it performs an unintended operation. Because the application logic does not properly validate the inputs provided within the request headers or body, the system processes these requests as legitimate, subsequently returning sensitive data or system-level state information to the attacker.\nThe attack flow proceeds as follows: First, the attacker identifies the network endpoint associated with the Db2 Mirror interface. Second, the attacker prepares an input payload designed to trigger the improper validation condition. Third, the attacker transmits this request to the target system over the network. Finally, the server, having failed to sanitize or validate the request parameters, executes a secondary procedure that exposes internal data structures or system variables, which are then inadvertently included in the server response.\nThis vulnerability does not require authentication, as the validation failure occurs at the initial stage of request processing, typically before the application enforces strict session or user-based access controls. The consequence of successful exploitation is the unauthorized disclosure of potentially highly sensitive information residing in memory or persistent storage, accessible via the service's API. Post-exploitation, an adversary may use the harvested data to facilitate lateral movement, conduct credential harvesting if sensitive logs are exposed, or gain insights into the system architecture to identify additional attack vectors. The lack of stringent input validation represents a critical architectural flaw in how the component handles remote service requests, effectively allowing a remote attacker to subvert the established security perimeter of the Db2 Mirror service."
}