CVE-2026-76729 Authenticated Format String Vulnerability allows Memory Corruption in HPE Networking Instant ON API Endpoint
Authenticated attackers can trigger memory corruption via format string flaws in HPE Instant ON API, leading to remote code execution or denial of service.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-76729?
CVE-2026-76729 is a medium-severity memory corruption vulnerability in Hewlett Packard Enterprise (HPE) Instant ON, published on 29 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A format string vulnerability in the API endpoint of HPE Networking Instant ON APs could allow an authenticated remote attacker with high privileges to cause memory corruption with a modified input. Successful exploitation could allow an attacker to provoke a denial-of-service condition or remote code execution in the affected system function.
Weakness: CWE-134
Which versions are affected by CVE-2026-76729?
How do I fix CVE-2026-76729?
No fix has been published for CVE-2026-76729 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-2026-76729 being exploited?
There is no known exploitation of CVE-2026-76729 in the wild and no public exploit code.
Sources
Also known as GHSA-wrm5-7wg3-q6g8.