CVE-2026-79808: HP ClearPass Policy Manager OnGuard buffer overflow

CVE-2026-79808 · Severity: high · CVSS 7.8 · Published 2026-10-06

ClearPass Policy Manager is an access control platform that manages network authentication and device compliance. A buffer overflow vulnerability in its OnGuard agent allows an authenticated local user to run arbitrary code with system-level privileges or crash the service, potentially compromising network access controls or disrupting authentication infrastructure.

Vendors: Hp.

Quick answers

Is CVE-2026-79808 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-79808 being exploited in the wild.
How severe is CVE-2026-79808?
High severity, with a CVSS score of 7.8, published 6 October 2026.
Which products and versions are affected?
HP ClearPass Policy Manager.
Is there a fix for CVE-2026-79808?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-79808 attacked?
It is attacked with local access, in a network appliance.
Am I affected by CVE-2026-79808?
Check whether you run Hp ClearPass Policy Manager. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A buffer overflow exists in the OnGuard agent component of ClearPass Policy Manager, exploitable by an authenticated local attacker. Successful exploitation allows arbitrary code execution with elevated privileges on the host or denial of service against the affected service. The vulnerability requires local access and prior authentication to trigger.

Affected products

  • HP ClearPass Policy Manager

Timeline

  • 2026-10-06: disclosed

References

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