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Full vulnerability report · 2026
CVE-2026-73706High confidence

Authentication Bypass in the API of HPE Networking Fabric Composer allows Data Exposure and Unauthorized Changes

Hewlett Packard Enterprise (HPE) · Fabric Composer

8.6HighCVSS 3.1
Recommended action
Within 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Fix not verified
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-69433

No EUVD known-exploited evidence

A vulnerability in the API of HPE Networking Fabric Composer could allow an unauthenticated remote attacker to obtain limited system information and to change the state of certain settings of a vulnerable system. Successful exploitation could allow an attacker to gain insight into internal services and workflows and to make unauthorized changes that may disrupt the normal operation of the affected service.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
8.6 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Fix not verified
01

What, why and how

A vulnerability in the API of HPE Networking Fabric Composer could allow an unauthenticated remote attacker to obtain limited system information and to change the state of certain settings of a vulnerable system. Successful exploitation could allow an attacker to gain insight into internal services and workflows and to make unauthorized changes that may disrupt the normal operation of the affected service.

What

A vulnerability in the API of HPE Networking Fabric Composer could allow an unauthenticated remote attacker to obtain limited system information and to change the state of certain settings of a vulnerable system. Successful exploitation could allow an attacker to gain insight into internal services and workflows and to make unauthorized changes that may disrupt the normal operation of the affected service.

Why

A security-sensitive function is reachable without the authentication check that should protect it.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

A vulnerability in the API of HPE Networking Fabric Composer could allow an unauthenticated remote attacker to obtain limited system information and to change the state of certain settings of a vulnerable system. Successful exploitation could allow an attacker to gain insight into internal services and workflows and to make unauthorized changes that may disrupt the normal operation of the affected service.

Why

A security-sensitive function is reachable without the authentication check that should protect it.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Missing Authentication for Critical Function → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-306 ↗

CWE-306: Missing Authentication for Critical Function. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CLowConfidentiality impact: A successful attack can cause a limited loss.IHighIntegrity impact: A successful attack can cause a major loss.ALowAvailability impact: A successful attack can cause a limited loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-306
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2026-69433Official EUVD mapping

A vulnerability in the API of HPE Networking Fabric Composer could allow an unauthenticated remote attacker to obtain limited system information and to change the state of certain settings of a vulnerable system. Successful exploitation could allow an attacker to gain insight into internal services and workflows and to make unauthorized changes that may disrupt the normal operation of the affected service.

Official EUVD record
CERT-FR · French · CERTFR-2026-AVI-1104Multiples vulnérabilités dans les produits HPE Aruba Networking

du 01 septembre 2026 https://csaf.arubanetworking.hpe.com/2026/hpe_networking_-_hpesbnw05134.txt Référence CVE CVE-2026-19766 https://www.cve.org/CVERecord?id=CVE-2026-19766 Référence CVE CVE-2026-73700 https://www.cve.org/CVERecord?id=CVE-2026-73700 Référence CVE CVE-2026-73701 https://www.cve.org/CVERecord?id=CVE-2026-73701 Référence CVE CVE-2026-73702 https://www.cve.org/CVERecord?id=CVE-2026-73702 Référence CVE CVE-2026-73703 https://www.cve.org/CVERecord?id=CVE-2026-73703 Référence CVE CVE-2026-73704 https://www.cve.org/CVERecord?id=CVE-2026-73704 Référence CVE CVE-2026-73705 https://www.cve.org/CVERecord?id=CVE-2026-73705 Référence CVE CVE-2026-73706 https://www.cve.org/CVERecord?id=CVE-2026-73706 Référence CVE CVE-2026-73707 https://www.cve.org/CVERecord?id=CVE-2026-73707 Référence CVE CVE-2026-73708 https://www.cve.org/CVERecord?id=CVE-2026-73708 Référence CVE CVE-2026-73709 https://www.cve.org/CVERecord?id=CVE-2026-73709 Référence CVE CVE-2026-73710 https://www.cve.org/CVERecord?id=CVE-2026-73710 Référence CVE CVE-2026-73711 https://www.cve.org/CVERecord?id=CVE-2026-73711 Référence CVE CVE-2026-73712 https://www.cve.org/CVERecord?id=CVE-2026-73712 Référence CVE CVE-2026-73713 https://www.cve.org/CVERecord?id=CVE-2026-73713 Référence CVE CVE-2026-73714 https://www.cve.org/CVERecord?id=

Official advisory
CSIRT Italia · Italian · risolte-vulnerabilita-in-prodotti-hpe-aruba-networking-1Risolte vulnerabilità in prodotti HPE Aruba Networking

nuova finestra - - CVE-2026-73720 : apre una nuova finestra - - CVE-2026-73719 : apre una nuova finestra - - CVE-2026-73718 : apre una nuova finestra - - CVE-2026-73717 : apre una nuova finestra - - CVE-2026-73716 : apre una nuova finestra - - CVE-2026-73715 : apre una nuova finestra - - CVE-2026-73714 : apre una nuova finestra - - CVE-2026-73713 : apre una nuova finestra - - CVE-2026-73712 : apre una nuova finestra - - CVE-2026-73711 : apre una nuova finestra - - CVE-2026-73710 : apre una nuova finestra - - CVE-2026-73709 : apre una nuova finestra - - CVE-2026-73708 : apre una nuova finestra - - CVE-2026-73707 : apre una nuova finestra - - CVE-2026-73706 : apre una nuova finestra - - CVE-2026-73705 : apre una nuova finestra - - CVE-2026-73704 : apre una nuova finestra - - CVE-2026-73703 : apre una nuova finestra - - CVE-2026-73702 : apre una nuova finestra - - CVE-2026-73701 : apre una nuova finestra - - CVE-2026-73700 : apre una nuova finestra - - CVE-2026-19766 : apre una nuova finestra - - Riferimenti (2) https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05133en_us&docLocale=en_US https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05134en_us&docLocale=en_US Change log Titolo della tabella Versione Note Data 1.0 Pubblicato il 02-09-2026 02/09/2026 Impatto sistemico Alt

Official advisory
NCSC-NL · Dutch · NCSC-2026-0339Kwetsbaarheden verholpen in HPE Networking Fabric Composer

A vulnerability in the HPE Networking Fabric Composer API allows unauthenticated remote attackers to access limited system information and modify certain settings, potentially disrupting normal service operations.

Official advisory
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix not verified
Affected
7.0.0 ≤ 7.3.3
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 1 Sept 2026 · Last source change 2 Sept 2026, 15:22 UTC · CWE-306 · Missing Authentication for Critical Function

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-09-02
European sourceENISA EUVD · EUVD-2026-69433
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceCISA ADP
NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates →
  1. Vendor guidanceAuthoritative vendor guidance changed from no authoritative guidance recorded to vendor advisory.
    Before
    no authoritative guidance recorded
    After
    vendor advisory
    security-alert@hpe.com ↗
  2. ENISA EUVD mappingEUVD-2026-69433 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2026-69433"}
    ENISA EUVD ↗
  3. Catalogue recordCVE added to the BlackTree catalogue.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2026-69433↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-73706 · cve.blacktree.nl