CVE-2026-76731: Hewlett Packard Enterprise HPE Instant On

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Hewlett Packard Enterprise HPE Instant On: from 0.0.0.0, up to and including 3.4.1.0

Published 2026-09-29. Last modified 2026-09-30.