# CVE-2026-73730: HPE Networking Fabric Composer API privilege escalation

Source: https://junglewise.ai/threats/cve-2026-73730-hpe-networking-fabric-composer-api-privilege-escalation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-01. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-73730 · Severity: medium · CVSS 6.5 · Published 2026-09-01

HPE Networking Fabric Composer is a network management platform used to configure and monitor fabric switches and related infrastructure. A privilege escalation flaw in its API allows authenticated low-privilege operators to change system settings they should not have access to, potentially compromising network configuration integrity and availability.

Technologies: [Arubanetworks Fabric Composer](https://junglewise.ai/threats/technologies/fabric-composer), [Hpe Networking Fabric Composer](https://junglewise.ai/threats/technologies/networking-fabric-composer). Vendors: [Arubanetworks](https://junglewise.ai/threats/vendors/arubanetworks), [Hpe](https://junglewise.ai/threats/vendors/hpe).

## Quick answers

**Is CVE-2026-73730 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-73730 being exploited in the wild.

**How severe is CVE-2026-73730?** Medium severity, with a CVSS score of 6.5, published 1 September 2026.

**Which products and versions are affected?** HPE Networking Fabric Composer.

**Is there a fix for CVE-2026-73730?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-73730 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-73730?** Check whether you run Arubanetworks Fabric Composer or Hpe Networking Fabric Composer. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A privilege escalation vulnerability exists in the API of HPE Networking Fabric Composer that fails to properly enforce role-based access controls. An authenticated user with low-privilege operator credentials can make API calls to modify system settings that should be restricted to higher-privileged roles. The vulnerability requires valid authentication and network access to the API; no unauthenticated exploitation is possible. Successful exploitation allows an attacker to alter critical system configurations, potentially leading to network disruption or unauthorized changes to fabric management settings. Patches are available from HPE.

## Affected products

- HPE Networking Fabric Composer

## Timeline

- 2026-09-01: disclosed

## References

- [https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05133en_us&docLocale=en_US](https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05133en_us&docLocale=en_US)

## Related threats

- [HPE Networking Fabric Composer API race condition](https://junglewise.ai/threats/cve-2026-95772-a-race-condition-vulnerability-exists-in-the-api-of-hpe)
- [HPE Networking Fabric Composer information disclosure in API](https://junglewise.ai/threats/cve-2026-95771-an-authenticated-information-disclosure-vulnerability-exists-in)
- [HPE Networking Fabric Composer information disclosure in OS](https://junglewise.ai/threats/cve-2026-95770-a-sensitive-information-disclosure-vulnerability-in-the)
- [HPE Networking Fabric Composer audit log spoofing](https://junglewise.ai/threats/cve-2026-95769-an-audit-log-spoofing-vulnerability-exists-in-the-api-of-hpe)
- [HPE Networking Fabric Composer API privilege escalation](https://junglewise.ai/threats/cve-2026-95768-a-privilege-escalation-vulnerability-exists-in-the-api-of-hpe)