CVE-2026-79802 in ClearPass Policy Manager
Summary
by MITRE • 10/06/2026
A command injection vulnerability exists in the client software of ClearPass Policy Manager. Successful exploitation could allow an attacker who is able to supply crafted input to the affected software to execute arbitrary commands with elevated privileges on the affected host.
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Analysis
by VulDB Data Team • 10/07/2026
The identified security flaw resides within the client-side components of Aruba ClearPass Policy Manager, a critical network access control and policy management platform widely deployed in enterprise environments. This vulnerability is classified as a command injection issue, which fundamentally stems from insufficient sanitization or validation of user-supplied input before it is processed by underlying system commands. In typical operational scenarios, the client software may accept configuration parameters, log data, or administrative inputs that are subsequently passed to operating system shell interpreters without adequate escaping of special characters. This architectural weakness allows an attacker who has gained access to the application interface or can inject crafted payloads into specific input fields to bypass intended security controls and execute arbitrary commands directly on the host machine where the client software is installed.
From a technical perspective, command injection vulnerabilities exploit the trust relationship between application logic and system-level execution environments. When the vulnerable component fails to distinguish between executable code and data inputs, it inadvertently allows malicious strings containing shell metacharacters such as semicolons, pipes, or ampersands to terminate legitimate commands and append new ones. This mechanism enables the attacker to chain multiple operations within a single injection payload, potentially leading to complete system compromise. The severity of this flaw is significantly amplified by the fact that ClearPass clients often run with elevated privileges necessary for network policy enforcement, device profiling, and secure communication with the central server. Consequently, successful exploitation does not merely result in unauthorized data access but grants the attacker full control over the underlying operating system, including the ability to install backdoors, exfiltrate sensitive credentials stored on the endpoint, or pivot into other parts of the internal network infrastructure.
The operational impact of this vulnerability is profound for organizations relying on ClearPass for identity and access management. An adversary leveraging this flaw could disrupt critical authentication services by terminating essential processes or modifying configuration files that dictate policy rules. Furthermore, because ClearPass often handles sensitive user credentials and device certificates, an attacker with command-level access can extract these assets to facilitate further attacks such as lateral movement across the network or impersonation of legitimate users and devices. This compromises the confidentiality, integrity, and availability of the entire identity management ecosystem, potentially leading to regulatory non-compliance if protected data is exposed due to inadequate input validation in client applications.
To mitigate this risk, immediate action should be taken by applying vendor-provided patches that address the input sanitization logic within the ClearPass Policy Manager client software. Organizations must ensure that all instances of the affected client are updated to versions where command injection vectors have been neutralized through rigorous parameter binding and strict output encoding practices. In addition to patching, defense-in-depth strategies should be employed, including restricting network access to management interfaces using firewalls or virtual local area networks (VLANs) to limit exposure to untrusted networks. Principle of least privilege must also be enforced by ensuring that client processes run with the minimum necessary permissions rather than elevated system rights whenever possible. Continuous monitoring for anomalous process execution patterns on endpoints running ClearPass clients can aid in early detection of exploitation attempts, while regular security assessments and penetration testing should verify that input validation controls remain effective against evolving attack techniques aligned with MITRE ATT&CK tactics such as Command and Scripting Interpreter abuse or Privilege Escalation.