Privilege escalation in Hewlett Packard Enterprise (HPE) HPE Aruba Networking Clearpass Policy Manager

CVE-2026-23599

A local privilege-escalation vulnerability has been discovered in the HPE Aruba Networking ClearPass OnGuard Software for Linux. Successful exploitation of this vulnerability could allow a local attacker to achieve arbitrary code execution with root privileges.

Vulnerability class: Privilege Escalation

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.001 (3.5th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 3.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-23599: held from 0.001 to 0.001.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-23599?
CVE-2026-23599 is a high-severity vulnerability in Hewlett Packard Enterprise (HPE) HPE Aruba Networking Clearpass Policy Manager, classified under Improper Privilege Management. CVSS score: 7.8/10. Published 2026-02-18.
How severe is CVE-2026-23599?
High severity. CVSS v3 base score is 7.8 out of 10.