CVE-2026-84862 in Guardium Data Protection
Summary
by MITRE • 09/25/2026
IBM Guardium Data Protection 12.2 is vulnerable to insecure deserialization in the Quartz JDBC job store. An authenticated attacker could exploit this vulnerability to execute arbitrary code on the affected system.
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Analysis
by VulDB Data Team • 09/25/2026
The IBM Guardium Data Protection version 12.2 contains a critical security flaw within its internal scheduling component, specifically involving the Quartz framework's JDBC job store mechanism. This vulnerability stems from an insecure deserialization process where the application fails to properly validate or sanitize input data before converting it back into executable objects in memory. In Java-based applications, deserialization is a common operation used to reconstruct object states from serialized byte streams, often transmitted over networks or stored in databases. When this process lacks rigorous type checking and allow-listing of trusted classes, an attacker can craft malicious payloads that exploit the underlying class loading mechanisms. The specific component affected here is responsible for managing scheduled database jobs, which implies that the vulnerability resides in a module with significant access privileges within the application architecture.
An authenticated attacker who has valid credentials to interact with the IBM Guardium Data Protection interface can leverage this flaw to achieve remote code execution on the underlying operating system. By manipulating the serialized data sent to the Quartz JDBC job store, the adversary can inject malicious object graphs that trigger arbitrary method calls during the deserialization phase. This capability effectively bypasses standard authentication controls because the exploitation occurs within a trusted context after login but before strict security boundaries are enforced for specific internal operations. The impact of such an exploit is severe, as it grants the attacker full control over the application server's process space, potentially leading to complete compromise of the data protection infrastructure and any connected databases or systems managed by Guardium.
From a classification perspective, this vulnerability aligns with CWE-502, which denotes Deserialization of Untrusted Data. This category highlights the risk associated with accepting serialized objects from unverified sources without adequate validation. Furthermore, in terms of tactical mapping within the MITRE ATT&CK framework, this exploit technique corresponds to T1059 Command and Scripting Interpreter or potentially T1068 Exploitation for Privilege Escalation depending on the specific payload used and the context of execution. The ability to execute arbitrary code via deserialization is a well-documented attack vector that has historically affected numerous enterprise applications, making it a high-priority target for threat actors seeking persistent access or lateral movement within an organization's network perimeter.
To mitigate this risk, immediate patching to the latest version of IBM Guardium Data Protection is essential as provided by the vendor security advisories. Organizations should also implement strict input validation and output encoding practices across all application layers that handle serialized data. Where possible, developers should avoid using Java serialization altogether in favor of safer alternatives like JSON or XML with schema validation. Additionally, deploying runtime application self-protection tools can help detect anomalous deserialization attempts by monitoring for suspicious class loading patterns. Network segmentation strategies should also be reviewed to ensure that even if an attacker gains initial access through authentication, their ability to interact directly with the vulnerable JDBC job store is restricted by firewall rules and zero-trust principles. Regular vulnerability scanning focused on known insecure components like Quartz can further aid in identifying similar exposures before they are exploited in the wild.