CVE-2026-79801 in ClearPass Policy Manager
Summary
by MITRE • 10/06/2026
A missing integrity verification vulnerability in the client agent software of HPE Networking ClearPass Policy Manager could allow an unauthenticated remote attacker to introduce untrusted code. Successful exploitation could allow an attacker to execute arbitrary code on the affected client system.
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Analysis
by VulDB Data Team • 10/07/2026
The identified vulnerability represents a critical failure in the security architecture of the HPE Networking ClearPass Policy Manager, specifically within its client agent software component. This flaw is categorized as CWE-354, which denotes improper validation of integrity during processing. In secure systems, any code or configuration data transmitted from an external source must undergo rigorous verification to ensure it has not been altered by unauthorized parties and originates from a trusted entity. The absence of this integrity check creates a significant attack surface where the boundary between untrusted input and privileged execution is effectively dissolved. An attacker who can interact with the client agent software does not need valid credentials or authentication tokens, as the system fails to verify that the incoming data packets are authentic before processing them. This lack of verification allows for a straightforward injection of malicious payloads into the application logic without triggering any defensive mechanisms designed to detect tampering or unauthorized modifications.
From an operational perspective, this vulnerability enables unauthenticated remote code execution, which is among the most severe consequences in cybersecurity. The attacker can leverage this flaw to introduce arbitrary commands that are executed with the privileges granted to the client agent process on the target system. Depending on how the service runs, these privileges may be equivalent to those of a standard user or potentially higher if the agent operates with elevated permissions for network management tasks. Successful exploitation allows the adversary to establish persistence, escalate privileges further by leveraging other local vulnerabilities, exfiltrate sensitive data such as authentication credentials stored in clear text or weakly protected formats, and pivot into deeper segments of the corporate network. The impact extends beyond immediate system compromise, potentially leading to widespread disruption if multiple endpoints are affected simultaneously through automated exploitation techniques targeting this specific agent software.
The attack vector aligns with several tactics within the MITRE ATT&CK framework, particularly those related to initial access and execution via remote services. Specifically, it relates to T1059 Command and Scripting Interpreter abuse where external input is directly executed without proper sanitization or validation. Furthermore, because the vulnerability allows for unauthenticated interaction, it facilitates lateral movement across networked devices that rely on ClearPass Policy Manager for authentication policies. The lack of integrity verification means that even if transport layer security like TLS is employed to encrypt traffic in transit, an attacker with local access or those who can manipulate routing tables might still inject malicious payloads into the processing pipeline before decryption or validation occurs, depending on where exactly the agent software performs its checks. This underscores a fundamental design flaw where cryptographic protections are not complemented by application-level integrity controls.
Mitigation strategies must address both immediate remediation and long-term architectural improvements. The primary action is to apply vendor-provided patches that implement proper checksumming or digital signature verification for all incoming data processed by the client agent software. Until such updates are deployed, network segmentation should be enforced to restrict access to the ClearPass Policy Manager infrastructure from untrusted networks. Access control lists on firewalls and routers must strictly limit communication with these systems to known management stations only. Additionally, implementing strict input validation at every layer of the application stack can help mitigate similar flaws in other components. Security teams should also monitor for anomalous process executions or unexpected network connections originating from ClearPass client agents as indicators of compromise. Regular audits of third-party software dependencies and their security configurations are essential to prevent recurrence of such integrity verification failures across the enterprise environment.