CVE-2026-76726 Authentication Bypass Leading to Unauthorized Network Access in HPE Networking Instant ON API Endpoint
Unauthenticated attackers can bypass network access controls to gain unauthorized access to restricted networks in HPE Instant ON.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-76726?
CVE-2026-76726 is a high-severity authentication bypass vulnerability in Hewlett Packard Enterprise (HPE) Instant ON, published on 29 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-287
Which versions are affected by CVE-2026-76726?
How do I fix CVE-2026-76726?
No fix has been published for CVE-2026-76726 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-76726 being exploited?
There is no known exploitation of CVE-2026-76726 in the wild and no public exploit code.
Sources
Also known as GHSA-7fmh-992m-7rrh.