CVE-2026-79803 in ClearPass Policy Manager
Summary
by MITRE • 10/06/2026
A command injection vulnerability exists in the API of ClearPass Policy Manager. Successful exploitation could allow an authenticated remote attacker to escalate privileges and gain administrative control of the affected system.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 10/07/2026
The identified security flaw resides within the application programming interface of Aruba ClearPass Policy Manager, a critical network access control platform widely deployed by enterprises for managing device authentication, authorization, and accounting. This vulnerability is classified as a command injection issue, which fundamentally represents a failure in input validation and sanitization mechanisms. Specifically, the API endpoint fails to adequately filter or escape special characters within user-supplied data before passing it to underlying operating system commands. When an authenticated remote attacker interacts with this specific interface component, they can inject malicious shell commands that are executed by the application process running on the server. This type of vulnerability is formally categorized under CWE-78, which covers Improper Neutralization of Special Elements used in an OS Command, commonly known as OS Command Injection. The presence of such a flaw indicates a significant gap in the secure coding practices applied to this specific API module, allowing external inputs to directly influence system-level operations beyond their intended scope.
The operational impact of exploiting this vulnerability is severe due to the privilege context in which ClearPass Policy Manager typically operates. Because successful exploitation allows an authenticated attacker to escalate privileges and gain administrative control, the threat actor effectively assumes full ownership of the affected server. This level of access enables the compromise of not only the policy manager itself but also all network devices and users managed by it. An adversary could manipulate authentication policies to bypass security controls, exfiltrate sensitive credential databases containing usernames and password hashes, or pivot into other segments of the corporate network. Furthermore, administrative control permits the installation of persistent backdoors, modification of audit logs to cover tracks, and disruption of availability services. From a tactical perspective, this aligns with ATT&CK techniques related to Command and Scripting Interpreter abuse for lateral movement and data exfiltration, as well as Account Manipulation for maintaining access. The ability to escalate privileges from an authenticated user account to root or system-level administrative rights transforms what might otherwise be a limited information disclosure into a complete infrastructure compromise.
Mitigation strategies must address both immediate remediation and long-term architectural improvements. The primary defense is the application of vendor-provided security patches that correct the input validation logic within the affected API endpoints. Organizations should prioritize updating to the latest supported version of ClearPass Policy Manager as soon as possible after verifying compatibility with their existing infrastructure. In scenarios where patching cannot be immediately implemented, network-level controls such as strict firewall rules restricting access to the management interface only from trusted administrative subnets can reduce the attack surface. Additionally, implementing Web Application Firewalls configured with specific signatures for command injection patterns may help block exploit attempts in transit. From a development and operational standpoint, this incident underscores the necessity of integrating static application security testing into the software development lifecycle to catch such flaws before deployment. Regular penetration testing focused on API endpoints is also recommended to identify similar weaknesses across other management interfaces within the network environment.