Is CVE-2026-76731 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-76731 being exploited in the wild.

How severe is CVE-2026-76731?

Medium severity, with a CVSS score of 6.5, published 29 September 2026.

Is there a fix for CVE-2026-76731?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-76731 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-76731?

Check whether you run Hpe Networking Instant On. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-76731: HPE Networking Instant On authentication bypass in captive portal

CVE-2026-76731 · Severity: medium · CVSS 6.5 · Published 2026-09-29

HPE Networking Instant On is a cloud-managed networking platform that provides wireless access point management. An authentication bypass vulnerability in its captive portal allows unauthenticated attackers to bypass login controls and access limited network data or make configuration changes, potentially compromising network security and user access policies.

Technologies: Hpe Networking Instant On. Vendors: Hpe.

Quick answers

Is CVE-2026-76731 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-76731 being exploited in the wild.
How severe is CVE-2026-76731?: Medium severity, with a CVSS score of 6.5, published 29 September 2026.
Which products and versions are affected?: HPE Networking Instant On.
Is there a fix for CVE-2026-76731?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-76731 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-76731?: Check whether you run Hpe Networking Instant On. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The captive portal authentication mechanism in HPE Networking Instant On fails to properly validate user credentials, allowing unauthenticated remote attackers to circumvent authentication controls via network requests. Successful exploitation grants attackers unauthorized access to limited data and the ability to make restricted configuration changes within the affected component.

Affected products

HPE Networking Instant On

Timeline

2026-09-29: disclosed

References

https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05150en_us&docLocale=en_US

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