CVE-2026-76736 Authenticated Local Buffer Overflow Vulnerability leads to Denial-of-Service in HPE Networking Instant On
A local buffer overflow in HPE Instant On allows authenticated low-privilege attackers to cause a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-76736?
CVE-2026-76736 is a low-severity memory corruption 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
A buffer overflow vulnerability exists in the underlying operating system of HPE Networking Instant On. Successful exploitation could allow a low-privilege authenticated local attacker to interrupt the normal operation of the affected service.
Weakness: CWE-119
Which versions are affected by CVE-2026-76736?
How do I fix CVE-2026-76736?
No fix has been published for CVE-2026-76736 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-76736 being exploited?
There is no known exploitation of CVE-2026-76736 in the wild and no public exploit code.
Sources
Also known as GHSA-4xh7-mfrf-xh8q.