Description
An authentication bypass vulnerability in the API endpoint of HPE Networking Instant ON could allow an unauthenticated remote attacker to bypass network access controls if certain preconditions outside of the attacker's control are met. Successful exploitation could allow an attacker to obtain unauthorized access to restricted networks.
Published: 2026-09-29
Score: 8.1 High
EPSS: < 1% Very Low
KEV: No
Impact: Authentication bypass resulting in unauthorized network access
Action: Immediate Patch
AI Analysis

Impact

The vulnerability is an authentication bypass in the HPE Networking Instant ON API endpoint that allows an attacker who is not authenticated to circumvent network access controls, provided certain preconditions beyond the attacker's control are met. This flaw can lead to an attacker obtaining unauthorized access to restricted networks, compromising confidentiality and integrity of sensitive data. The CVSS score of 8.1 reflects a high severity impact on both availability and misuse of network resources.

Affected Systems

The affected product is Hewlett Packard Enterprise ( HPE) Instant ON. No specific version information is supplied in the advisory; the issue applies to any installed instance of the product that includes the vulnerable API endpoint.

Risk and Exploitability

The vulnerability carries a CVSS score of 8.1, indicating a high risk. The EPSS score is not provided, so the current probability of exploitation remains uncertain; however, the lack of KEV listing suggests no widely known exploits yet. Based on the description, the likely attack vector is remote, unauthenticated access to the API endpoint from the public internet, provided the required preconditions exist. An attacker would need to target the exposed API without valid credentials, exploiting the bypass logic to gain network access.

Generated by OpenCVE AI on September 29, 2026 at 21:47 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the latest HPE Networking Instant ON patch that addresses the authentication bypass.
  • If a patch is unavailable, restrict the API endpoint to trusted internal networks and block all external traffic through firewall rules.
  • Configure logging and alerting to detect unauthenticated access attempts to the API and investigate anomalous activity promptly.

Generated by OpenCVE AI on September 29, 2026 at 21:47 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Wed, 30 Sep 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 30 Sep 2026 21:00:00 +0000

Type Values Removed Values Added
First Time appeared Hewlett Packard Enterprise (hpe)
Hewlett Packard Enterprise (hpe) instant On
Vendors & Products Hewlett Packard Enterprise (hpe)
Hewlett Packard Enterprise (hpe) instant On

Tue, 29 Sep 2026 22:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284
CWE-287

Tue, 29 Sep 2026 19:45:00 +0000

Type Values Removed Values Added
Description An authentication bypass vulnerability in the API endpoint of HPE Networking Instant ON could allow an unauthenticated remote attacker to bypass network access controls if certain preconditions outside of the attacker's control are met. Successful exploitation could allow an attacker to obtain unauthorized access to restricted networks.
Title Authentication Bypass Leading to Unauthorized Network Access in HPE Networking Instant ON API Endpoint
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Subscriptions

Hewlett Packard Enterprise (hpe) Instant On
cve-icon MITRE

Status: PUBLISHED

Assigner: hpe

Published:

Updated: 2026-10-01T03:55:34.454Z

Reserved: 2026-08-19T16:13:18.139Z

Link: CVE-2026-76726

cve-icon Vulnrichment

Updated: 2026-09-30T20:34:31.591Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-29T20:17:24.707

Modified: 2026-10-01T04:18:20.137

Link: CVE-2026-76726

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-30T20:36:45Z

Weaknesses