CVE-2026-76751 Hewlett Packard Enterprise (HPE) CVE debrief

Who should care

Security teams, network administrators, and IT professionals responsible for managing ClearPass Policy Manager deployments should assess exposure and prioritize remediation. These stakeholders must verify the scope of affected systems, review vendor-provided patches or updates, and consider compensating controls to mitigate potential risks. The critical nature of this vulnerability necessitates prompt action from these groups to prevent potential security

Why it matters

CVE-2026-76751 is a critical vulnerability in ClearPass Policy Manager's OnGuard agent, allowing unauthenticated remote code execution. Security teams and IT professionals should assess exposure, prioritize remediation, and consider compensating controls.

• Potential for unauthenticated remote code execution with elevated privileges.
• Need for verification of affected versions and application of patches or updates.
• Importance of inventory checks to identify potentially affected systems.
• Potential for compensating controls, such as network segmentation or monitoring, to mitigate risks.

Technical summary

The OnGuard agent of ClearPass Policy Manager is vulnerable to a missing integrity verification issue, allowing unauthenticated remote attackers to execute arbitrary code with elevated privileges. This critical vulnerability has a CVSS score of 9.8 and requires immediate attention from security teams and IT professionals. The vulnerability's technical framing involves a missing integrity verification issue in the OnGuard agent, which can be exploited by unauthenticated remote attackers to execute arbitrary code with elevated privileges.

Defensive priority

High priority for verification and remediation due to critical CVSS score and potential for unauthenticated remote code execution.

Recommended defensive actions

• Verify and apply vendor-provided patches or updates for ClearPass Policy Manager.
• Conduct thorough inventory checks to identify potentially affected systems.
• Implement compensating controls, such as network segmentation or monitoring, to mitigate potential risks.
• Review relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.

Evidence notes

The CVE record and source item provide details on the vulnerability, but limited information is available on affected versions and remediation. Defenders should verify the scope of affected systems, review vendor-provided patches or updates, and consider compensating controls. The vulnerability's critical CVSS score and potential for unauthenticated remote code execution necessitate a thorough review of potentially affected systems and prompt remediation. Evidence is limited, and further verification is required to ensure the accuracy

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.