# CVE-2026-73707: HPE Networking Fabric Composer privilege escalation in API

Source: https://junglewise.ai/threats/cve-2026-73707-hpe-networking-fabric-composer-privilege-escalation-in-api  
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-2026-73707 · Severity: high · CVSS 8.5 · Published 2026-09-01

HPE Networking Fabric Composer is a network fabric management platform used by enterprises to configure and oversee their network infrastructure. A privilege escalation vulnerability in its API allows authenticated operators with low-level permissions to perform unauthorized state-changing actions, including modifications to managed systems' configurations. This could enable unauthorized reconfiguration of critical network infrastructure by insider threats or compromised operator accounts.

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-2026-73707 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-73707 being exploited in the wild.

**How severe is CVE-2026-73707?** High severity, with a CVSS score of 8.5, published 1 September 2026.

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

**Is there a fix for CVE-2026-73707?** 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-2026-73707 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-73707?** 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

The vulnerability is a privilege escalation flaw in the API of HPE Networking Fabric Composer that fails to properly enforce authorization controls. An authenticated user with low-privilege operator permissions can bypass authorization checks to execute state-changing API operations that should be restricted to higher-privilege roles. The attack requires valid credentials and network access to the affected API. Successful exploitation allows an attacker to modify the configuration of systems managed by the platform, potentially disrupting network operations or enabling lateral movement within managed infrastructure. HPE has released patches for affected versions.

## 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)