Auth bypass in Arubanetworks Fabric Composer

CVE-2026-73723

A privilege escalation vulnerability exists in the web-based management interface of HPE Networking Fabric Composer. Successful exploitation could allow an authenticated low privilege operator user to complete state-changing actions that should not be allowed by their current level of authorization on the platform.

Vulnerability class: Broken Access Control

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L.

EPSS exploit prediction

EPSS: 0.004 (29.1th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 29.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-73723: held from 0.003 to 0.004.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-73723?
CVE-2026-73723 is a high-severity vulnerability in Arubanetworks Fabric Composer, classified under Incorrect Authorization. CVSS score: 7.1/10. Published 2026-09-01.
How severe is CVE-2026-73723?
High severity. CVSS v3 base score is 7.1 out of 10.