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HPE Fabric Composer CVE-2026-95745

| EUVDEUVD-2026-116162 HIGH
2026-11-03 security-alert@hpe.com GHSA-2hqr-gfpj-5pcg
7.5
CVSS 3.1 · Vendor: hpe
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Reach Fabric Composer API over network
  2. Exploit
    Send crafted malformed API request
  3. Execution
    Trigger denial-of-service condition
  4. Impact
    Management services become unavailable

Vulnerability Assessment

Exploitation Conditions

Exploitation requires network reachability to the HPE Networking Fabric Composer API; per CVSS PR:N/UI:N it needs no authentication and no user interaction, affecting the API as deployed. The limiting factor is exposure of the management/API interface - Fabric Composer management planes are typically deployed on restricted management networks, so organizations that isolate the API from untrusted networks substantially reduce real-world reach. Impact is confined to availability (C:N/I:N/A:H): successful attack renders management services unavailable but does not expose data or allow code execution. The specific API request, protocol condition, or input that triggers the DoS is not described in the available sources.

Impact

The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H, base 7.5) describes a network-reachable, low-complexity, unauthenticated flaw whose entire impact is availability - no confidentiality or integrity loss. HPE's vuln.today decision label is this_week, indicating a prioritized-but-not-emergency fix cadence rather than act_now/emergency. No EPSS score, no CISA KEV listing, and no exploit or PoC reference are present in the input: exploitation status is therefore 'no public exploit identified at time of analysis,' and there is no signal of active or widespread exploitation. The signals are internally consistent - a genuinely remote, unauthenticated DoS against a management plane is operationally serious where the product is exposed, but the ceiling is service disruption, not data compromise or code execution. Net: a real priority to patch on a this-week timeline for affected HPE Networking Fabric Composer deployments, but not a drop-everything emergency absent exploitation evidence. Missing data to note: no EPSS, no KEV, no CWE (listed N/A), and the only reference is the HPE advisory URL with no title, so independent corroboration beyond the vendor is limited.

Exploit ScenarioDerived

A remote, unauthenticated attacker with network access to the HPE Networking Fabric Composer API sends crafted or malformed requests that drive the management services into an unavailable state, disrupting fabric management operations. No authentication or user interaction is required per the CVSS vector. No public exploit or PoC is identified in the available data; the precise request that triggers the condition is not described in the available sources.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet

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AnalysisAIv1 – Nov 03, 2026

Denial of service in HPE Networking Fabric Composer's API allows unauthenticated remote attackers to make management services unavailable, with a CVSS 3.1 base score of 7.5 and availability-only impact. The assessed vector (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) describes a network-reachable, low-complexity path that needs no authentication or user interaction, though real-world exposure depends on whether the management/API interface is reachable from untrusted networks. No public exploit identified at time of analysis, and no CISA KEV entry is present in the supplied data.

RemediationAI

Patch availability is not confirmed in the supplied data; consult the HPE advisory at https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05172en_us&docLocale=en_US for the fixed release and upgrade instructions before making changes. Until a fixed version is confirmed, reduce exposure by restricting network reachability to the Fabric Composer API/management interface with firewall rules or ACLs so only trusted management hosts can connect-this lowers the chance of an unauthenticated remote denial of service but does not remediate the API flaw and can block legitimate administration if scoped too narrowly. Place the management plane on a dedicated, isolated management network or VLAN where feasible; this limits reach from untrusted networks but does not protect against an attacker already positioned on that segment. Monitor management-service availability and API access logs for disruption, recognizing that this is detective rather than preventative.

Affected VersionsENISA

Fabric Composer 7.4.0 ≤7.4.0
Fabric Composer 7.0.0 ≤7.3.4

Affected Packages

euvd fabric_composer no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

HPE Networking Fabric Composer exposes an API used for fabric management functions, and the supplied data identifies that API as the affected component without providing CPE strings or a CWE mapping. The root-cause weakness class and the specific API request, protocol condition, or input that triggers the denial of service are not described in the available sources. The assessed CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) confirms a network-reachable, low-complexity issue with no authentication or user-interaction requirement and impact confined to availability; the evidence does not support claims of data exposure, integrity modification, or code execution.

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Severity by source

Vendor (hpe) PRIMARY 7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vuln.today AI 7.5 HIGH

Remote unauthenticated API reachability gives AV:N/AC:L/PR:N/UI:N; impact is availability-only (A:H) with no confidentiality or integrity effect and no scope change.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (hpe).

CVSS VectorVendor: hpe

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

DescriptionCVE.org

A vulnerability in the API of HPE Networking Fabric Composer could allow an unauthenticated remote attacker to conduct a denial of service attack. Successful exploitation could allow an attacker to cause the management services to become unavailable.

Executive ViewAI

Why It Matters

HPE Networking Fabric Composer's management API contains a high-severity vulnerability that could allow unauthenticated remote attackers to disrupt network management services, potentially affecting availability of critical infrastructure. Leadership should prioritize remediation because a sustained outage could impair network visibility and control, impacting business operations and service delivery.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations include restricting network access to the management API, implementing rate limiting, and deploying a WAF to filter malicious traffic.

Threat Intelligence Overview

Prevalence
Low
niche HPE data-center fabric management product, not broadly deployed
Data Quality
2 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS N/A
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact
High

Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +38
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

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