Quick answers
- Is CVE-2026-73739 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-73739 being exploited in the wild.
- How severe is CVE-2026-73739?
- 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-2026-73739?
- 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-2026-73739 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-73739?
- 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 exists in the API of HPE Networking Fabric Composer and permits cleartext exposure of sensitive information. An attacker with administrative privileges can exploit this flaw to retrieve sensitive data that should remain protected within the system. The attack vector requires network access to the API and valid administrative credentials. A successful exploitation enables disclosure of sensitive information such as credentials or configuration secrets, facilitating further compromise of the fabric environment. Patches or mitigations should be available from HPE.
Affected products
- HPE Networking Fabric Composer
Timeline
- 2026-09-01: disclosed