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Vulnerabilities

Vulnerability · CVE-2026-79866

Unauthenticated Adjacent Path Traversal Vulnerability leads to Filesystem Compromise in AOS-8

Published Oct 22, 2026 · catalog updated Oct 23, 2026 · Hewlett Packard Enterprise (HPE) ArubaOS (AOS)

Open the advisory

Exploitation likelihood is not on this record for CVE-2026-79866. A missing EPSS score is not a low risk. Compare Hewlett Packard Enterprise (HPE) ArubaOS (AOS) with the linked advisory before you change production.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
  • EPSS is missing. A missing score is not a low risk.
Severity
Critical9.6
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
Not in the current FIRST EPSS dataset
Remediation
Not established
Affected products
vendor Hewlett Packard Enterprise (HPE) ArubaOS (AOS)

An unauthenticated path traversal vulnerability exists in the PAPI protocol in AOS-8. Successful exploitation of this vulnerability could allow an unauthenticated adjacent attacker to read, modify, and delete files on the underlying operating system.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Hewlett Packard Enterprise (HPE) ArubaOS (AOS)version unspecified

How to fix CVE-2026-79866

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

Exploitation likelihood is not on this record for CVE-2026-79866. A missing EPSS score is not a low risk. Compare Hewlett Packard Enterprise (HPE) ArubaOS (AOS) with the linked advisory before you change production.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS is absent from the current FIRST dataset. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 23, 2026 · BSI CERT-Bund

    Detected

    CVE-2026-79866 is listed by Aruba ArubaOS: Mehrere Schwachstellen.

  2. Oct 23, 2026 · CVE.org

    Updated

    An unauthenticated path traversal vulnerability exists in the PAPI protocol in AOS-8. Successful exploitation of this vulnerability could allow an unauthenticated adjacent attacker to read, modify, and delete files on the underlying operating system.

Sources

  • BSI CERT-BundGovernment advisoryCVE-2026-79866

    Aruba ArubaOS: Mehrere Schwachstellen

    wid.cert-bund.de
  • CVE.orgVulnerability recordCVE-2026-79866

    An unauthenticated path traversal vulnerability exists in the PAPI protocol in AOS-8. Successful exploitation of this vulnerability could allow an unauthenticated adjacent attacker to read, modify, and delete files on the underlying operating system.

    cve.org

References

Freshness

Last verified in this catalog Oct 23, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.