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CVE-2026-76658

10.0 · CRITICAL

A vulnerability has been identified in the SSH daemon of HPE Networking Fabric Composer that could allow an unauthenticated remote attacker to gain administrative access to vulnerable AFC hosts.

Published Sep 1, 2026arubanetworksCWE-287EPSS 0.75%

Overview

CVE-2026-76658 is a critical-severity vulnerability affecting arubanetworks fabric_composer. It was published on September 1, 2026 and has a CVSS 3.1 base score of 10.0 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 10.0, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A vulnerability has been identified in the SSH daemon of HPE Networking Fabric Composer that could allow an unauthenticated remote attacker to gain administrative access to vulnerable AFC hosts. Successful exploitation could allow an attacker to execute arbitrary commands as a privileged user on the underlying operating system leading to complete system compromise.

Remediation

Check the references section for vendor advisories and patches from arubanetworks. Update fabric_composer to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
arubanetworksfabric_composer0Affected

References

Refsupport.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05133en_us&docLocale=en_US

How CyberStrike helps

Frequently asked questions

What is CVE-2026-76658?

CVE-2026-76658 is a critical-severity vulnerability affecting arubanetworks fabric_composer. It was published on September 1, 2026 and has a CVSS 3.1 base score of 10.0 (CRITICAL).

How severe is CVE-2026-76658?

This vulnerability has a CVSS 3.1 base score of 10.0, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-76658?

Check the references section for vendor advisories and patches from arubanetworks. Update fabric_composer to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-76658?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-76658 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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