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NVD / CVE Program· CNA hpe

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

CriticalCVSS 10.0 · v3.1—No exploit No fix recorded

Noroxi assessment

Priority: Plan (action score 40/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.74% (FIRST EPSS); higher than 55.3% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • According to the record, no fixed version is available yet.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Add it to your regular patch cycle. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

Published
Sep 1, 2026
Updated
Sep 2, 2026
EPSS
0.7% · 55th percentile

Report tools

JSON

Action score

40

Plan

Add it to your regular patch cycle.

CVSS
40 / 40 · 10.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.7%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · hpe
10.0
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.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-76658

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
arubanetworksfabric composer

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

Affected versions

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

  • arubanetworks fabric composerup to 7.3.3 inclusive

Same product

arubanetworks: all records

Other highest-scoring records for the same primary product.

  • 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

Published before and after this one in the same product

  • ← EarlierCVE-2026-73746Sep 1, 2026 · Authenticated Denial of Service Vulnerability in HPE Networking Fabric Composer API
    12Monitor
  • ← EarlierCVE-2026-73747Sep 1, 2026 · Local Privilege Escalation Vulnerability in HPE Networking Fabric Composer
    10Monitor
  • ← EarlierCVE-2026-73748Sep 1, 2026 · Authenticated Sensitive Information Disclosure in HPE Networking Fabric Composer
    8Monitor

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).

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.

  • CVE-2026-766570 days apartAuthentication Bypass in HPE Networking Fabric Composer API allows Administrative Access
    40Plan
  • CVE-2026-197660 days apartAuthentication Bypass leads to Administrative control of adjacent network hosts in HPE Networking Fabric Composer
    38Monitor
  • CVE-2026-737330 days apartAuthentication Bypasses in API allow Continued Authenticated Access in HPE Networking Fabric Composer
    21Monitor

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-2026-737220 days apartAuthenticated Command Injection Vulnerabilities in HPE Networking Fabric Composer Web-Based Management Interface
    28Monitor
  • CVE-2026-737200 days apartAuthenticated Insecure File Handling allows Remote Code Execution in HPE Networking Fabric Composer API
    28Monitor
  • CVE-2026-737210 days apartAuthenticated SQL Injection Vulnerabilities in HPE Networking Fabric Composer
    28Monitor
  • CVE-2026-737190 days apartAuthenticated Arbitrary File Write Vulnerability leads to Remote Code Execution in HPE Networking Fabric Composer
    28Monitor

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Not on record for this CVE: patch commit or PR link · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • 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

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Changed
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-287 · Improper Authentication

CVSS vector

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

nvd-secondary

Root cause

Authentication is added route by route instead of being enforced in one place. When a route added later bypasses the shared middleware, the session check never runs for it.

The bug in code

The whole CWE-287 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
app.use("/admin", requireSession, adminRouter);
// Route added later skips the middlewareapp.post("/admin-api/config", updateConfig);

Fixed

ts
const admin = express.Router();admin.use(requireSession, requireRole("admin"));
admin.post("/config", updateConfig);app.use("/admin", admin);

Attack context

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

References

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

All records