CVE-2026-76746 Unauthenticated Adjacent Buffer Overflow Vulnerability Leading to Information Disclosure in AOS-S
Unauthenticated adjacent attackers can exploit a buffer overflow in HPE AOS-Switch to disclose sensitive memory and cause denial of service.
- 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-2026-76746?
CVE-2026-76746 is a critical memory corruption vulnerability in Hewlett Packard Enterprise (HPE) AOS-Switch (AOS-S), published on 6 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An unauthenticated buffer overflow vulnerability exists in AOS-S. Successful exploitation could allow an unauthenticated adjacent attacker to expose sensitive memory contents and cause a denial of service on the affected device.
Weakness: CWE-120
Which versions are affected by CVE-2026-76746?
How do I fix CVE-2026-76746?
No fix has been published for CVE-2026-76746 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-2026-76746 being exploited?
There is no known exploitation of CVE-2026-76746 in the wild and no public exploit code.
Sources
Also known as GHSA-xjm4-53qx-cfrp.