CVE-2026-16915 in Db2 Mirror for i
Summary
by MITRE • 08/14/2026
IBM Db2 Mirror for i 7.4, 7.5, and 7.6 could allow a remote authenticated attacker to obtain sensitive information due to improper input validation.
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Analysis
by VulDB Data Team • 08/14/2026
This vulnerability affects IBM Db2 Mirror for i versions 7.4, 7.5, and 7.6, presenting a significant security risk that could be exploited by remote authenticated attackers to gain unauthorized access to sensitive information. The core issue stems from improper input validation mechanisms within the database mirror functionality, which fails to adequately sanitize or validate user-supplied data before processing. This weakness creates an avenue for attackers who have legitimate authentication credentials to manipulate input parameters and potentially extract confidential data from the system.
The technical flaw manifests in the insufficient validation of input parameters that are processed by the Db2 Mirror component, which is designed to maintain data consistency across multiple database systems. When authenticated users submit specially crafted inputs through the mirror interface, the system does not properly validate or sanitize these inputs before using them in database operations. This inadequate validation allows for potential information disclosure scenarios where attackers can manipulate the system to reveal sensitive data that should otherwise remain protected.
From an operational perspective, this vulnerability significantly impacts the security posture of organizations relying on IBM Db2 Mirror for i systems, as it undermines the integrity and confidentiality guarantees that database mirroring is designed to provide. The remote authenticated nature of the attack means that adversaries do not require physical access or privileged network positions to exploit this weakness, making the threat more accessible. Organizations may experience unauthorized data exposure, potential compliance violations, and increased risk of further attacks leveraging the gained information.
The vulnerability aligns with CWE-20, which describes improper input validation as a fundamental security weakness that can lead to various attack vectors including information disclosure, injection attacks, and privilege escalation scenarios. From an ATT&CK framework perspective, this weakness maps to techniques involving credential access and defense evasion, as attackers could potentially use the information disclosure to gather intelligence about system configurations or extract sensitive data for further exploitation. The impact extends beyond immediate data exposure to potential long-term security implications including insider threat risks and increased attack surface for subsequent compromise attempts.
Organizations should implement immediate mitigations including applying the latest IBM security patches and updates, reviewing and strengthening input validation mechanisms within their Db2 Mirror configurations, and implementing additional monitoring controls to detect anomalous input patterns. Network segmentation and least privilege access principles should be reinforced to limit potential exploitation scope. Regular security assessments and vulnerability scanning should be conducted to identify similar input validation weaknesses in other database components and ensure comprehensive protection against information disclosure threats.