CVE-2026-4921 in Guardium Data Protection
Summary
by MITRE • 09/23/2026
IBM Guardium Data Protection 12.2 could allow an administrative user to obtain sensitive information when a detailed technical error message is returned in the browser. This information could be used in further attacks against the system.
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Analysis
by VulDB Data Team • 09/23/2026
The vulnerability identified within IBM Guardium Data Protection version 12.2 represents a significant risk related to improper error handling and information disclosure. As an administrative interface for database security monitoring and protection, this platform handles highly sensitive data access logs and configuration settings. The core technical flaw lies in the application's response mechanism when internal processing errors occur during administrative operations. Instead of returning generic or sanitized error messages suitable for end-users or administrators, the system exposes detailed stack traces, file paths, SQL queries, or other low-level diagnostic information directly within the browser interface. This behavior indicates a failure to implement robust exception handling protocols that mask implementation-specific details from external observers.
From a technical perspective, this flaw aligns with CWE-209, which describes the generation of an error message that includes sensitive information useful for attackers. The exposure of such granular data provides adversaries with critical insights into the underlying architecture, database schema structures, and potentially valid authentication endpoints or internal API routes. In the context of web application security, this is often categorized under CWE-200, which covers the exposure of sensitive information to an unauthorized actor. By analyzing these verbose error responses, a malicious administrative user or an attacker who has compromised low-level credentials can map out the system's logic and identify potential injection points or misconfigurations that are not immediately visible through normal operational use.
The operational impact of this vulnerability is substantial due to its role as an enabler for further attacks. While the initial access requires some level of administrative privilege, which might be obtained through credential theft or social engineering, the subsequent information leakage significantly lowers the barrier for escalating privileges or executing more complex exploits. For instance, detailed error messages may reveal database connection strings, internal server IP addresses, or specific library versions with known vulnerabilities. This intelligence allows an attacker to craft targeted payloads against those specific components, potentially leading to remote code execution, data exfiltration, or complete system compromise. The ATT&CK framework classifies this behavior under the Discovery tactic, specifically within techniques related to System Information Discovery and Application Data Discovery, as it facilitates reconnaissance activities that are crucial for lateral movement and persistence in a targeted attack chain.
Mitigation strategies must focus on both immediate remediation and long-term architectural improvements. IBM has addressed this issue by updating the application logic to ensure that all error responses returned to the client interface are sanitized and generalized. Administrators should immediately apply the latest security patches or updates provided by IBM for Guardium Data Protection 12.2 to close this information leakage channel. Beyond patching, organizations should implement strict logging policies where detailed technical errors are recorded in secure server-side logs rather than exposed via HTTP responses. Additionally, adopting a defense-in-depth approach includes configuring web servers and application firewalls to intercept and replace verbose error pages with custom, user-friendly messages that do not reveal internal system states. Regular security audits and penetration testing should also be conducted to verify that no other endpoints exhibit similar behaviors, ensuring comprehensive protection against information disclosure vulnerabilities.