RCE in Arubanetworks Fabric Composer

CVE-2026-73712

A vulnerability in the API of HPE Networking Fabric Composer could allow an unauthenticated remote attacker to run arbitrary commands on the underlying host if certain preconditions outside of the attacker's control are met. Successful exploitation of this vulnerability could allow an attacker to execute arbitrary commands on the underlying operating system leading to complete system compromise.

Vulnerability class: Command Injection (OS Command Injection)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (49.8th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.8% 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-2026-73712: held from 0.004 to 0.006.

EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.002

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-73712?
CVE-2026-73712 is a high-severity vulnerability in Arubanetworks Fabric Composer, classified under OS Command Injection. CVSS score: 8.1/10. Published 2026-09-01.
How severe is CVE-2026-73712?
High severity. CVSS v3 base score is 8.1 out of 10.