What is the CVSS score of CVE-2026-23599?

CVE-2026-23599 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Which versions of Linux are affected by CVE-2026-23599?

HPE Aruba ClearPass OnGuard deployments on Linux are vulnerable to local privilege escalation attacks that could grant attackers root-level access and full system compromise.

How to fix or mitigate CVE-2026-23599?

Within 24 hours: Inventory all ClearPass OnGuard Linux deployments and restrict local access to authorized administrators only; document current user accounts and access patterns. Within 7 days: Implement strict access controls limiting local SSH/console access, disable unnecessary local accounts, and apply principle of least privilege to service accounts. Within 30 days: Monitor HPE security advisories for patch availability and establish expedited deployment procedures; consider isolating affected systems on a segregated management network until patches are released.

Linux CVE-2026-23599

HIGH

Improper Privilege Management (CWE-269)

2026-02-18 security-alert@hpe.com

Linux

7.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.8 HIGH

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

CVE Published

Feb 18, 2026 - 00:16 nvd

HIGH 7.8

DescriptionCVE.org

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.

AnalysisAI

HPE Aruba Networking ClearPass OnGuard Software for Linux contains a local privilege escalation vulnerability that allows authenticated users to execute arbitrary code with root privileges. The flaw requires local access and no user interaction, making it exploitable by any local account on an affected system. No patch is currently available to remediate this issue.

Technical ContextAI

Classified as CWE-269 (Improper Privilege Management). 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.

Affected ProductsAI

A local privilege-escalation vulnerability has been discovered in the HPE Aruba Networking ClearPass OnGuard Software for Linux. Successful exploitati