CVE-2026-79807 in ClearPass Policy Manager
Summary
by MITRE • 10/06/2026
A missing integrity verification vulnerability in the Windows client software for ClearPass Policy Manager could allow malicious users on a local instance to elevate their user privileges. A successful exploit could allow these users to execute attacker-supplied code with elevated privileges on the local system.
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Analysis
by VulDB Data Team • 10/07/2026
The identified vulnerability represents a critical failure in integrity verification mechanisms within the Windows client software component of Aruba ClearPass Policy Manager. This flaw specifically affects systems where the client is installed locally, creating an environment where malicious actors operating under low-privilege user accounts can manipulate local system states to bypass security controls. The core technical deficiency lies in the application's inability to properly validate the authenticity and integrity of its own configuration files or executable components during runtime operations. By neglecting robust cryptographic checks or file signature verification before executing critical functions, the software inadvertently trusts potentially tampered resources that reside on the same local machine as the vulnerable client process.
From a technical perspective, this missing integrity check allows an attacker to replace legitimate system binaries or configuration data with maliciously crafted alternatives without detection. When the ClearPass Policy Manager client subsequently loads these compromised components, it executes them under the context of its own running privileges. Since administrative clients often operate with higher-level permissions than standard user accounts to facilitate network policy enforcement and authentication tasks, this trust relationship becomes a powerful vector for privilege escalation. The attacker does not need remote access or complex exploitation chains; instead, they leverage local file system write permissions inherent in their current low-privilege session to inject malicious code into trusted directories monitored by the vulnerable application.
The operational impact of this vulnerability is severe, as it effectively neutralizes the principle of least privilege for any user account that has been granted access to install or modify files within specific ClearPass client directories. A successful exploit results in arbitrary code execution with elevated privileges on the local Windows host. This grants the attacker full control over the compromised system, enabling them to create new administrative accounts, steal sensitive credentials stored locally, disable security software such as antivirus solutions, and pivot further into the internal network through the authenticated ClearPass connection. The ability to execute attacker-supplied code at a higher privilege level transforms what might otherwise be a minor local configuration issue into a significant compromise of system integrity and confidentiality.
This vulnerability aligns with Common Weakness Enumeration (CWE) identifiers such as CWE-354, which describes improper validation of integrity checks, and CWE-269, concerning the use of elevated privileges to perform unauthorized actions. In terms of offensive security frameworks like MITRE ATT&CK, this flaw facilitates techniques related to Privilege Escalation via Local Exploitation and potentially Process Injection if the attacker chooses to inject code into existing high-privilege processes rather than replacing files entirely. The lack of integrity verification also touches upon CWE-913 for improper control of frequency of interactions, as the system fails to verify that resources have not been altered between initialization and execution phases.
Mitigation strategies must focus on both immediate remediation and long-term architectural improvements. Organizations should immediately apply vendor-provided patches or updates that address this specific integrity verification gap in the ClearPass Policy Manager Windows client software. Until patching is feasible, administrators can implement strict file system permissions to restrict write access to critical installation directories for standard user accounts, thereby preventing attackers from replacing trusted binaries with malicious ones. Additionally, enabling advanced auditing on these directories can help detect unauthorized modifications before they are exploited. Long-term solutions should involve implementing application whitelisting technologies such as Windows Defender Application Control or third-party alternatives that enforce strict execution policies based on digital signatures and file hashes, ensuring that only verified ClearPass components can run regardless of user privileges.