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CVE-2026-76658: Unauthenticated Remote Code Execution in HPE Networking Fabric Composer SSH Daemon

Analyzed
Published 01-09-2026Last modified 01-09-2026

Vulnerability summary

CVE-2026-76658 is a critical (CVSS 10.0) Improper Authentication vulnerability in arubanetworks fabric_composer. EPSS estimates a 0.75% chance of exploitation in the next 30 days, higher than 54.3% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
10.0/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.75%
0%100%
Low · +0.31 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 01-09-2026
    PublishedVulnerability first disclosed.
  2. 01-09-2026
    Last modifiedVulnerability information updated.

Description

A vulnerability has been identified in the SSH daemon of HPE Networking Fabric Composer that could allow an unauthenticated remote attacker to gain administrative access to vulnerable AFC hosts. Successful exploitation could allow an attacker to execute arbitrary commands as a privileged user on the underlying operating system leading to complete system compromise.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.75%

Chance of exploitation in the next 30 days

Percentile

54%

Versus all other CVEs

30-day change

Increase +0.31 pp

From 0.43% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Arubanetworks1 product
Hewlett packard enterprise (hpe)1 product

2 vendors · 2 products

References

1 links