CVE-2026-79808 Local Authenticated Buffer Overflow Vulnerability in the ClearPass Policy Manager OnGuard Agent
A local authenticated user can exploit a buffer overflow in the ClearPass OnGuard agent to execute arbitrary code with elevated privileges or cause 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-2026-79808?
CVE-2026-79808 is a high-severity memory corruption vulnerability in Hewlett Packard Enterprise (HPE) ClearPass Policy Manager (CPPM), 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
A buffer overflow vulnerability exists in the OnGuard agent of ClearPass Policy Manager. Successful exploitation could allow an authenticated local user to execute arbitrary code with elevated privileges on the affected host or to disrupt the availability of the affected service.
Weakness: CWE-120
Which versions are affected by CVE-2026-79808?
How do I fix CVE-2026-79808?
No fix has been published for CVE-2026-79808 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-2026-79808 being exploited?
There is no known exploitation of CVE-2026-79808 in the wild and no public exploit code.
Sources
Also known as GHSA-vrf6-8f5q-64r6.