Authentication Bypass leads to Administrative control of adjacent network hosts in HPE Networking Fabric Composer

published 2026-09-01 2mo ago modified 2026-09-04 2mo ago also EUVD-2026-69577

cvss: 9.6; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 32%
public exploits: 0; none known

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.

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CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 2mo ago (2026-09-02)

Exploit prediction

0.38% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	9.6	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

Hewlett Packard Enterprise (HPE) Fabric Composer

Classification

Weakness

CWE-287 Improper Authentication

References

support.hpe.com /hpesc/public/docDisplay?docId=hpesbnw05133en_us&docLocale=en_US
vendor-advisory

Sources

CVE List CVE-2026-19766
NVD CVE-2026-19766

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