CVE-2026-76730 Improper PAPI Packet handling leads to unauthorized access in HPE Networking Instant ON APs
An unauthenticated adjacent attacker can bypass authentication in HPE Instant ON APs to send unauthorized network traffic.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-76730?
CVE-2026-76730 is a medium-severity authentication bypass vulnerability in Hewlett Packard Enterprise (HPE) Instant ON, published on 29 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An authentication bypass vulnerability exists in the PAPI protocol of HPE Networking Instant ON APs that could allow an unauthenticated adjacent attacker to circumvent existing authentication controls. Successful exploitation could allow an attacker to circumvent certain existing authentication mechanisms and send unauthorized network traffic to the target device.
Weakness: CWE-287
Which versions are affected by CVE-2026-76730?
How do I fix CVE-2026-76730?
No fix has been published for CVE-2026-76730 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-2026-76730 being exploited?
There is no known exploitation of CVE-2026-76730 in the wild and no public exploit code.
Sources
Also known as GHSA-ch2c-mfgg-5cgv.