Quick answers
- Is CVE-2026-73726 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-73726 being exploited in the wild.
- How severe is CVE-2026-73726?
- Medium severity, with a CVSS score of 6.8, published 1 September 2026.
- Which products and versions are affected?
- HPE Networking Fabric Composer.
- Is there a fix for CVE-2026-73726?
- 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-2026-73726 attacked?
- It is attacked from the adjacent network.
- Am I affected by CVE-2026-73726?
- 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 an authentication bypass in the underlying operating system of HPE Networking Fabric Composer. It allows an unauthenticated adjacent network actor to circumvent existing authentication controls without requiring valid credentials. Successful exploitation grants administrative access, enabling attackers to modify system configurations, access or manipulate sensitive data, and potentially compromise the entire fabric management infrastructure. The attack requires network adjacency but no user interaction or prior authentication. Patches are available from HPE.
Affected products
- HPE Networking Fabric Composer
Timeline
- 2026-09-01: disclosed