CVE-2026-79806 Hewlett Packard Enterprise (HPE) CVE debrief

Who should care

System administrators and security teams responsible for ClearPass Policy Manager (CPPM) instances, especially those with OnGuard Linux agents, should assess exposure and prioritize patching.

Why it matters

CVE-2026-79806 is a high-severity authenticated local privilege escalation vulnerability in ClearPass Policy Manager OnGuard Linux agent. Defenders should prioritize verifying and patching affected instances, reviewing system inventories, and monitoring for potential exploitation attempts.

• Verify and patch affected systems to prevent potential exploitation
• Review system inventories for OnGuard Linux agents to identify potential vulnerabilities
• Monitor for potential exploitation attempts to detect and respond to potential security incidents

Technical summary

The ClearPass Policy Manager OnGuard Linux agent is vulnerable to authenticated local privilege escalation. A successful exploit allows a malicious user to escalate to root privileges on the affected Linux client. The vulnerability has a CVSS score of 7.8 and is classified as HIGH severity. Defenders should prioritize verifying and patching affected ClearPass Policy Manager (CPPM) instances, especially those with OnGuard Linux agents, and review system inventories for potential vulnerabilities. Hewlett Packard Enterprise (HPE) is the affected vendor.

Defensive priority

Defenders should prioritize verifying and patching affected ClearPass Policy Manager (CPPM) instances, especially those with OnGuard Linux agents. This involves reviewing system inventories, applying vendor patches, and monitoring for potential exploitation attempts.

Recommended defensive actions

• Verify and patch affected ClearPass Policy Manager (CPPM) instances
• Review system inventories for OnGuard Linux agents
• Monitor for potential exploitation attempts
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE Program record and NVD vulnerability detail provide official information about the vulnerability. The source item from cve_program_cvelist_v5 offers additional metadata and context. Defenders should verify and patch affected ClearPass Policy Manager (CPPM) instances, especially those with OnGuard Linux agents, and review system inventories for potential vulnerabilities.

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.