Quick answers
- Is CVE-2026-73728 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-73728 being exploited in the wild.
- How severe is CVE-2026-73728?
- 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-2026-73728?
- 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-2026-73728 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-73728?
- 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
Denial-of-service vulnerabilities exist in the API of HPE Networking Fabric Composer. The vulnerability requires authentication as a low-privilege operator user. An attacker with valid low-privilege credentials can craft specific API requests that cause the service to become unavailable, interrupting normal operation of the affected platform. No remote unauthenticated exploitation is possible. Patches are available from HPE.
Affected products
- HPE Networking Fabric Composer
Timeline
- 2026-09-01: disclosed