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CVE-2026-73704· NVD / CVE Program· CNA hpe

Authenticated Command Injection Leading to Administrative Access in HPE Networking Fabric Composer API

A command sanitization bypass exists in the API of HPE Networking Fabric Composer. Successful exploitation could allow an authenticated low privilege operator user to escalate their permissions to those of an administrative user, leading to complete compromise of the affected system.

HighCVSS 8.8 · v3.1—No exploit No fix recorded

Noroxi analysis

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Published
Sep 1, 2026
Updated
Sep 2, 2026
EPSS
0.5% · 43th percentile
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Report tools

JSON

Action score

35

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.5%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · hpe
8.8
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
arubanetworksfabric composer

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • arubanetworks fabric composerbefore 7.3.4

Versions reported by the vendor

Affected version ranges reported by the assigning authority (hpe). Independent of NVD's CPE analysis and usually ahead of it.

  • Hewlett Packard Enterprise (HPE) Fabric Composer

    • 7.0.0 and later · up to and including 7.3.3affected · semver

Same product

arubanetworks: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-76658Unauthenticated Remote Code Execution in HPE Networking Fabric Composer SSH Daemon
    40Plan
  • CVE-2026-76657Authentication Bypass in HPE Networking Fabric Composer API allows Administrative Access
    40Plan
  • CVE-2026-19766Authentication Bypass leads to Administrative control of adjacent network hosts in HPE Networking Fabric Composer
    38Monitor
  • CVE-2026-73701Unauthenticated Remote Code Execution in HPE Networking Fabric Composer
    36Monitor
  • CVE-2026-73700Authenticated Stored Cross-Site Scripting Vulnerability (XSS) in HPE Networking Fabric Composer Web-Based Management Interface
    36Monitor
  • CVE-2026-73705Authenticated Arbitrary File Write leads to Remote Code Execution in HPE Networking Fabric Composer
    35Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

—

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

  • CVE-2026-737260 days apartAuthentication Bypass in HPE Networking Fabric Composer allows Unauthorized Administrative Access
    27Monitor

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records