# CVE-2026-73740: HPE Networking Fabric Composer privilege escalation

Source: https://junglewise.ai/threats/cve-2026-73740-hpe-networking-fabric-composer-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-2026-73740 · Severity: medium · CVSS 4.4 · Published 2026-09-01

HPE Networking Fabric Composer is a network management tool used to configure and monitor fabric infrastructure. A local privilege escalation vulnerability allows an already-authenticated user with elevated privileges to further expand their access and modify critical system settings, potentially disrupting network operations or exposing configuration data.

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-2026-73740 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-73740 being exploited in the wild.

**How severe is CVE-2026-73740?** Medium severity, with a CVSS score of 4.4, published 1 September 2026.

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

**Is there a fix for CVE-2026-73740?** 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-2026-73740 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-73740?** 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

This is a local privilege escalation vulnerability in HPE Networking Fabric Composer that allows an authenticated user with privileged access on the underlying host to escalate to a higher role with additional capabilities. The attack requires prior authentication and local system access, and successful exploitation enables an attacker to alter the state of system settings. The vulnerability has been documented in CVE-2026-73740 with a CVSS score of 4.4 (medium severity). HPE has released guidance and patches; users should consult HPE support documentation for remediation steps specific to their deployment.

## 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)