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HPE ArubaOS 8: Authentication bypass in SSH daemon

CVE-2026-79855Critical 9.8

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Summary

The SSH daemon of HPE ArubaOS 8 (AOS-8), the wireless operating system for Mobility Conductors, Mobility Controllers, Mobility Gateways and access points, contains an authentication bypass. An unauthenticated remote attacker who can reach the SSH service can circumvent the login and gain administrative privileges, which may lead to full compromise of the AOS-8 host. The CVSS base score is 9.8 (Critical). Exploitation is considered automatable by CISA SSVC.

Affected

  • AOS-8 8.13.0.0 to 8.13.3.0 (per CVE record; earlier branches unknown)
  • AOS-8 8.10.0.0 to 8.10.0.23 (per CVE record; earlier branches unknown)
  • Note: versions to be verified against HPE advisory HPESBNW05162 rev.1

Fixed in

  • AOS-8.13.3.1 (per secondary reporting, verify with HPE)
  • AOS-8.10.0.24 (per secondary reporting, verify with HPE)
  • Fixed versions for other AOS-8 branches: Unknown.

Workaround

  • No specific workaround known.
  • Interim measure: restrict SSH and management access to trusted administration networks only.

Exploitation

  • No evidence of exploitation found at the time of research.
  • Not listed in CISA KEV according to one source.
  • No public proof of concept found; absence of evidence is not proof.

Our recommendation

  • Check whether AOS-8 Mobility Conductors, Controllers, Gateways or access points are deployed and whether their SSH service is reachable from untrusted networks.
  • Restrict SSH and management access to trusted administration networks now.
  • Apply the updates from HPE advisory HPESBNW05162 as a whole, not only for this CVE, after verifying the fixed versions in the advisory.
  • Monitor for exploitation activity and unexpected administrative logins.

Public exploits

PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.

Research sources

Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 30 Oct 2026, 17:00.

Original description (NVD)

An authentication bypass vulnerability in the SSH daemon of AOS-8 allows an unauthenticated remote attacker to circumvent existing authentication controls. Successful exploitation allows an attacker to gain administrative privileges leading to complete compromise of the AOS-8 host.

NVD references (1)

Sources

The tracker combines official, freely usable data sources – updated continuously:

This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.

Affected? We can help.

We check whether your systems are affected, install updates and close the gap – continuously with the System Health Checker if you wish.