CVE-2026-76731

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Authentication Bypass in HPE Networking Instant On Captive Portal

Publication date: 2026-09-29

Last updated on: 2026-09-29

Assigner: Hewlett Packard Enterprise (HPE)

Description

An authentication bypass vulnerability in the captive portal of HPE Networking Instant On could allow an unauthenticated remote attacker to circumvent existing authentication controls. Successful exploitation could allow an attacker to gain limited access to some data and to make limited changes within the affected component.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-29

Last Modified

2026-09-29

Generated

2026-09-30

AI Q&A

2026-09-30

EPSS Evaluated

N/A

NVD

CVE-2026-76731

EUVD

EUVD-2026-89350

Affected Vendors & Products

Vendor	Product	Version / Range
hpe	nw_instant_on	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This is an authentication bypass vulnerability in the captive portal of HPE Networking Instant On. It allows an unauthenticated remote attacker to bypass existing authentication controls and gain limited access to data or make limited changes within the affected component.

Impact Analysis

An attacker could exploit this to access some data or make limited changes without proper authorization. This could lead to unauthorized access to sensitive information or configuration changes in the network.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, which may violate compliance requirements for GDPR, HIPAA, or other regulations that mandate strict access controls and data protection.

Mitigation Strategies

Update the HPE Networking Instant On captive portal to the latest firmware version to address the authentication bypass vulnerability.

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