CVE-2026-23599
7.8Hewlett Packard Enterprise (HPE) · Aruba Networking ClearPass Policy Manager
A local privilege escalation flaw in HPE Aruba Networking ClearPass OnGuard for Linux allows local attackers to gain root-level code execution.
Executive summary
A critical local privilege escalation vulnerability in HPE Aruba Networking ClearPass Policy Manager enables authenticated local attackers to achieve arbitrary code execution with root privileges.
Vulnerability
This is a local privilege escalation vulnerability occurring within the OnGuard software for Linux. An attacker with low-level local access can leverage this flaw to execute arbitrary code with root-level permissions.
Business impact
The ability for a local user to escalate to root privileges poses a severe risk to system integrity and confidentiality. Successful exploitation could lead to full system compromise, unauthorized data access, and the potential for persistent backdoors. Given the CVSS score of 7.8, this represents a high-severity threat that necessitates immediate attention to prevent lateral movement within the network.
Remediation
Immediate Action: Review the official HPE security advisory at the provided reference link and apply the recommended software updates or security patches as soon as they are made available by the vendor.
Proactive Monitoring: Monitor local system access logs for unusual command execution, unexpected privilege elevation attempts, or unauthorized modifications to system configuration files.
Compensating Controls: Restrict local system access to authorized personnel only and implement the principle of least privilege to minimize the number of users capable of interacting with the vulnerable software components.
Exploitation status
Public Exploit Available: No (exploit_available: false)
Analyst recommendation
The vulnerability presents a significant risk to the security posture of affected HPE Aruba Networking environments. Administrators must prioritize the application of vendor-supplied patches as soon as they are released to prevent the potential for full system compromise. Until updates are applied, maintain strict access controls to limit the exposure of the vulnerable ClearPass OnGuard service.
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Sources
Originally found and disclosed by HPE Aruba Networking Engineering Team, per the CVE Program record.