CVE-2026-76721 Unauthenticated Buffer Overflow Vulnerability leads to Remote Code Execution in HPE Networking Instant ON APs
Unauthenticated remote attackers can exploit a buffer overflow in HPE Instant ON APs to execute arbitrary code with privileged access.
- 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-2026-76721?
CVE-2026-76721 is a critical memory corruption 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
Buffer overflow vulnerability exists in the affected interface of HPE Networking Instant ON that could allow an unauthenticated remote attacker to run arbitrary code on the underlying host. Successful exploitation could allow an attacker to execute arbitrary code as a privileged user on the underlying operating system.
Weakness: CWE-119
Which versions are affected by CVE-2026-76721?
How do I fix CVE-2026-76721?
No fix has been published for CVE-2026-76721 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-2026-76721 being exploited?
There is no known exploitation of CVE-2026-76721 in the wild and no public exploit code.
Sources
Also known as GHSA-pw85-jqmm-v352.