Vulnerability · Published Sep 1, 2026 · Assigned by hpe
CVE-2026-19766Authentication Bypass leads to Administrative control of adjacent network hosts in HPE Networking Fabric Composer
Critical 9.6
In plain English
A critical-severity improper authentication in Fabric Composer from Hewlett Packard Enterprise (HPE). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities).
Severity (CVSS 3.1)9.6Critical
Exploit odds (30 days)0.4%top 67.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
An authentication bypass vulnerability exists in the underlying operating system of HPE Networking Fabric Composer. Successful exploitation could allow an unauthenticated adjacent attacker to execute arbitrary code as a privileged user on the underlying operating system, leading to complete compromise of the AFC host.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Hewlett Packard Enterprise (HPE) | Fabric Composer | 7.0.0 – through 7.3.3 |
Weakness: CWE-287 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H