Auth bypass in Arubanetworks Fabric Composer

CVE-2026-73707

Privilege escalation vulnerabilities exist in the API 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, including changes to the configuration of systems managed by the affected product.

Vulnerability class: Broken Access Control

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L.

EPSS exploit prediction

EPSS: 0.003 (25.7th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 25.7% 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-2026-73707: held from 0.002 to 0.003.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-73707?
CVE-2026-73707 is a high-severity vulnerability in Arubanetworks Fabric Composer, classified under Incorrect Authorization. CVSS score: 8.5/10. Published 2026-09-01.
How severe is CVE-2026-73707?
High severity. CVSS v3 base score is 8.5 out of 10.