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Full vulnerability report · 2026
CVE-2026-73733High confidence

Authentication Bypasses in API allow Continued Authenticated Access in HPE Networking Fabric Composer

Hewlett Packard Enterprise (HPE) · Fabric Composer

5.4MediumCVSS 3.1
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

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-2026-69460

No EUVD known-exploited evidence

Authentication bypasses in the API of HPE Networking Fabric Composer could allow an authenticated low privilege operator user to circumvent existing authentication controls. Successful exploitation could allow an attacker to retain limited access to the affected system after that access should have been revoked.

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
5.4 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Fix not verified
01

What, why and how

Authentication bypasses in the API of HPE Networking Fabric Composer could allow an authenticated low privilege operator user to circumvent existing authentication controls. Successful exploitation could allow an attacker to retain limited access to the affected system after that access should have been revoked.

What

Authentication bypasses in the API of HPE Networking Fabric Composer could allow an authenticated low privilege operator user to circumvent existing authentication controls. Successful exploitation could allow an attacker to retain limited access to the affected system after that access should have been revoked.

Why

The affected component does not establish the requesting party's identity reliably before granting access.

How

An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may bypass an access boundary or take over an account.

What

Authentication bypasses in the API of HPE Networking Fabric Composer could allow an authenticated low privilege operator user to circumvent existing authentication controls. Successful exploitation could allow an attacker to retain limited access to the affected system after that access should have been revoked.

Why

The affected component does not establish the requesting party's identity reliably before granting access.

How

An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may bypass an access boundary or take over an account.

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 → Improper Authentication → bypass an access boundary or take over an account
Attack surface
Network
Privileges required
Low: a basic authenticated account is required
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-287 ↗

CWE-287: Improper Authentication. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

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:L/UI:N/S:U/C:L/I:L/A:N

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.PRLowPrivileges required: The attacker needs basic user-level 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.ILowIntegrity impact: A successful attack can cause a limited loss.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land
Stolen credentials, tokens and legitimate administration functions may provide continued access without deploying a large custom toolset.
NetworkCWE-287
A

Official authority intelligence

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

ENISA EUVD · EUVD-2026-69460Official EUVD mapping

Authentication bypasses in the API of HPE Networking Fabric Composer could allow an authenticated low privilege operator user to circumvent existing authentication controls. Successful exploitation could allow an attacker to retain limited access to the affected system after that access should have been revoked.

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

d?id=CVE-2026-73724 Référence CVE CVE-2026-73725 https://www.cve.org/CVERecord?id=CVE-2026-73725 Référence CVE CVE-2026-73726 https://www.cve.org/CVERecord?id=CVE-2026-73726 Référence CVE CVE-2026-73727 https://www.cve.org/CVERecord?id=CVE-2026-73727 Référence CVE CVE-2026-73728 https://www.cve.org/CVERecord?id=CVE-2026-73728 Référence CVE CVE-2026-73729 https://www.cve.org/CVERecord?id=CVE-2026-73729 Référence CVE CVE-2026-73730 https://www.cve.org/CVERecord?id=CVE-2026-73730 Référence CVE CVE-2026-73731 https://www.cve.org/CVERecord?id=CVE-2026-73731 Référence CVE CVE-2026-73732 https://www.cve.org/CVERecord?id=CVE-2026-73732 Référence CVE CVE-2026-73733 https://www.cve.org/CVERecord?id=CVE-2026-73733 Référence CVE CVE-2026-73734 https://www.cve.org/CVERecord?id=CVE-2026-73734 Référence CVE CVE-2026-73735 https://www.cve.org/CVERecord?id=CVE-2026-73735 Référence CVE CVE-2026-73736 https://www.cve.org/CVERecord?id=CVE-2026-73736 Référence CVE CVE-2026-73737 https://www.cve.org/CVERecord?id=CVE-2026-73737 Référence CVE CVE-2026-73738 https://www.cve.org/CVERecord?id=CVE-2026-73738 Référence CVE CVE-2026-73739 https://www.cve.org/CVERecord?id=CVE-2026-73739 Référence CVE CVE-2026-73740 https://www.cve.org/CVERecord?id=CVE-2026-73740 Référence CVE CVE-2026-73741 https://www.cve.org/CVERecord?id=

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

Authentication bypass vulnerabilities in the HPE Networking Fabric Composer API allow low privilege users to retain unauthorized access even after their permissions are revoked.

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 1 Sept 2026, 20:24 UTC · CWE-287 · Improper Authentication

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-2026-69460
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceCISA ADP
NVD statusNVD enriched

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-2026-69460 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2026-69460"}
    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-2026-69460↗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-2026-73733 · cve.blacktree.nl