CVE-2026-84083 in Guardium Data Protection
Summary
by MITRE • 09/18/2026
IBM Guardium Data Protection 12.2 is vulnerable to local privilege escalation via the SUID-root nmap_wrapper binary on the Collector appliance. A local attacker with low-privileged access to the Collector can exploit insufficient argument validation in the SUID binary to execute arbitrary commands as root, resulting in full compromise of the Collector appliance.
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Analysis
by VulDB Data Team • 09/18/2026
The vulnerability identified in IBM Guardium Data Protection version 12.2 represents a critical security flaw within the architecture of its data collection infrastructure, specifically targeting the local privilege escalation capabilities available through the nmap_wrapper binary. This component operates with set-user-identifier (SUID) root permissions on the Collector appliance, which is designed to gather and process sensitive network traffic data for compliance and monitoring purposes. The core technical deficiency lies in insufficient argument validation within this SUID-root executable. When a local user invokes the wrapper, the application fails to properly sanitize or restrict the input arguments passed to underlying system commands. This lack of rigorous input filtering allows an attacker who has already obtained low-privileged shell access on the Collector appliance to inject malicious payloads into these command-line arguments. By leveraging this flaw, the attacker can bypass standard security controls and execute arbitrary operating system commands with root-level privileges, effectively escalating their access from a restricted user account to full administrative control over the entire system.
From an operational perspective, the impact of this vulnerability is severe due to the sensitive nature of the data handled by IBM Guardium appliances. The Collector serves as a central point for ingesting audit logs and network metadata that organizations rely on for detecting unauthorized access, regulatory compliance reporting, and forensic analysis. A successful exploitation results in the complete compromise of the appliance's integrity and confidentiality. An attacker with root access can modify or delete critical configuration files, tamper with collected data to hide malicious activities, extract sensitive information stored locally by the collector, and potentially use the compromised Collector as a pivot point to attack other systems within the protected network segment. This undermines the fundamental purpose of deploying Guardium, which is to provide visibility into database activity and protect against insider threats or external intrusions that have reached this stage. The ability to execute arbitrary commands as root means an adversary can establish persistent backdoors, install additional malware, or disable security logging mechanisms, thereby achieving stealthy long-term access without detection by the very systems designed to monitor them.
This vulnerability aligns with Common Weakness Enumeration (CWE) identifiers such as CWE-78 Improper Neutralization of Special Elements used in an OS Command and CWE-269 Elevation of Privilege. The failure to validate arguments before passing them to a privileged context is a classic example of command injection within a SUID environment, where the trust boundary between user input and system execution is breached. In terms of tactical classification under the MITRE ATT&CK framework, this exploit maps directly to T1068 Exploitation for Privilege Escalation, specifically illustrating how local attackers leverage misconfigured binaries or software vulnerabilities to gain higher-level access. It also relates to T1548 Abuse Elevation Control Mechanism, as it involves abusing the SUID bit mechanism which is intended to grant temporary elevated privileges but becomes a vector for abuse due to poor implementation practices. Understanding these mappings helps security teams contextualize the risk not just as an isolated bug but as part of broader patterns in privilege escalation attacks that target system administration tools and monitoring agents.
To mitigate this vulnerability, immediate action must be taken by applying the official patches provided by IBM for Guardium Data Protection version 12.2. Organizations should prioritize updating all Collector appliances to a patched release where the nmap_wrapper binary has been hardened with proper input validation or removed if not strictly necessary for operational functions. In environments where patching cannot occur immediately, compensating controls include restricting local shell access to only those users who absolutely require it for maintenance tasks and implementing strict file integrity monitoring on the SUID binaries to detect any unauthorized modifications. Additionally, network segmentation should be reviewed to ensure that even if a Collector is compromised, lateral movement to other critical database servers or management consoles is restricted by firewall rules and zero-trust principles. Regular audits of SUID files across all Linux-based systems are recommended as part of routine security hygiene to identify similar misconfigurations before they can be exploited.