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Attack ChainAIDerived

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

  1. Access
    Gain access to UFM management network
  2. Delivery
    Send crafted HTTP request to web interface
  3. Exploit
    Trigger CWE-287 authentication bypass
  4. Execution
    Acquire elevated session context
  5. Persist
    Execute arbitrary code on UFM host
  6. Impact
    Control fabric management plane

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Authentication mechanism validation
MITRE ATT&CK

2 techniques across 2 tactics: Defense Evasion, Initial Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires network adjacency to the UFM Enterprise web management interface - the attacker must be on the same Layer-2 or closely adjacent network segment as the management host, consistent with CVSS AV:A. The CVSS vector specifies PR:N (no prior privileges required), but the description states 'an authenticated user' as the actor, creating an unresolved ambiguity: it is not confirmed from available data whether exploitation requires any valid credential or is fully unauthenticated. No user interaction is required (UI:N). The vulnerability is limited to the web interface authorization component; other UFM interfaces or protocols are not implicated by available data. Exploitation is further constrained to environments where the UFM web interface is network-accessible from an attacker-reachable segment - organizations with strict out-of-band management network isolation reduce exposure significantly.

Impact

The CVSS 3.1 base score of 8.8 (High) is driven by High impact across all three CIA pillars and is partially constrained by AV:A (Adjacent network), which limits exploitation to attackers with foothold or physical presence on the same network segment as the UFM management interface. This adjacency requirement is the primary real-world risk moderator and meaningful in practice, as UFM typically sits on dedicated out-of-band management networks - though in poorly segmented HPC environments the management plane may be reachable by a wider population. There is a notable discrepancy between the CVSS vector (PR:N - no privileges required) and the CVE description, which states 'an authenticated user could cause improper authentication.' This could mean the vulnerability is a full authentication bypass exploitable without any prior credentials (consistent with PR:N), or it could mean a low-privileged authenticated user can escalate, with the PR:N assignment being a vendor interpretation of the effective post-bypass state. This ambiguity should be resolved against the NVIDIA advisory at https://github.com/NVIDIA/product-security/tree/main/2026/5809 before finalizing remediation priority. No EPSS score was provided in the source data, and the CVE is not listed in the CISA KEV catalog, indicating no confirmed active exploitation. AC:L suggests exploitation is straightforward once network adjacency is achieved, so even a small or mid-sized operation running InfiniBand clusters should treat this as urgent if the management network is not strictly isolated.

Exploit ScenarioDerived

An attacker with access to the network segment hosting the UFM Enterprise management interface crafts a malformed or manipulated HTTP request targeting the web authorization component. The improper authentication logic (CWE-287) fails to correctly validate the request's credentials or authorization context, granting the attacker elevated access. The attacker then leverages this elevated session to execute arbitrary code on the UFM host, potentially pivoting to control the entire InfiniBand fabric management plane.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.5% exploitation probability (EPSS)

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AnalysisAIv1 – Aug 25, 2026

Authentication bypass in NVIDIA UFM Enterprise's web interface authorization component allows an attacker on the adjacent network to send specially crafted HTTP requests that circumvent authentication checks, yielding code execution and privilege escalation on the UFM management host. All four active release tracks - GA, LTS 2023, LTS 2024, and LTS 2025 - are listed as affected per NVD CPE data. No public exploit code has been identified at time of analysis, and this CVE does not appear in the CISA KEV catalog.

RemediationAI

The primary remediation action is to apply the vendor-released patch referenced in the NVIDIA Product Security advisory at https://github.com/NVIDIA/product-security/tree/main/2026/5809; exact fixed version numbers must be retrieved from that advisory, as they are not confirmed in the available NVD data. While awaiting patching, the most effective compensating control is strict network segmentation: restrict access to the UFM Enterprise web interface (typically TCP 443 or 80) to only authorized management hosts and administrator workstations using firewall ACLs or host-based controls, exploiting the AV:A constraint of this vulnerability. Disabling remote web interface access entirely and requiring in-band or jump-host-mediated access significantly reduces exposure but may impact operational workflows. Do not rely on network adjacency alone as a control, as flat management networks or VPN access can implicitly extend the adjacent-network perimeter.

Affected VersionsENISA

Unified Fabric Manager Enterprise - LTS 2024 All LTS versions prior to 6.19.15
Unified Fabric Manager Enterprise - LTS 2023 All LTS versions prior to 6.15.17
Unified Fabric Manager Enterprise - LTS 2025 All LTS versions prior to 6.23.20-3
Unified Fabric Manager Enterprise - GA All GA versions prior to 6.24.1-5

Affected Packages

euvd unified_fabric_manager_enterprise_ga_all_ga_versions_prior_to no fix
euvd unified_fabric_manager_enterprise_lts_2023_all_lts_versions_prior_to no fix
euvd unified_fabric_manager_enterprise_lts_2024_all_lts_versions_prior_to no fix
euvd unified_fabric_manager_enterprise_lts_2025_all_lts_versions_prior_to no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 4 packages in euvd

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

Technical ContextAI · show details

NVIDIA UFM Enterprise (Unified Fabric Manager Enterprise) is a data-center fabric management platform used to orchestrate InfiniBand and high-speed Ethernet networks, predominantly in HPC, AI training, and large-scale GPU cluster environments. The flaw resides in the web interface authorization component and is classified as CWE-287 (Improper Authentication), meaning the system fails to adequately verify that an entity is who it claims to be before granting access. By sending specially crafted HTTP requests, the authorization logic can be confused or bypassed, effectively allowing a request to be treated as having higher trust than warranted. Affected CPEs span all current release tracks: nvidia:unified_fabric_manager_enterprise_-_ga, nvidia:unified_fabric_manager_enterprise_-_lts_2025, nvidia:unified_fabric_manager_enterprise_-_lts_2024, and nvidia:unified_fabric_manager_enterprise_-_lts_2023, covering the entirety of the actively maintained product surface.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (nvidia) PRIMARY 8.8 HIGH
AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vuln.today AI 8.0 HIGH

Description says 'authenticated user,' so PR:L is more accurate than vendor's PR:N; AV:A and full CIA impact retained.

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

Primary rating from Vendor (nvidia).

CVSS VectorVendor: nvidia

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

DescriptionCVE.org

NVIDIA UFM Enterprise contains a vulnerability in the web interface authorization component, where an authenticated user could cause improper authentication by sending specially crafted HTTP requests. A successful exploit of this vulnerability might lead to code execution and escalation of privileges.

Executive ViewAI

Why It Matters

NVIDIA UFM Enterprise, a critical infrastructure management platform, contains an authentication bypass vulnerability (CVSS 8.8) that allows adjacent-network attackers to gain code execution and system-level control without credentials. This directly compromises the security of datacenter operations and all systems managed through UFM. Organizations should immediately assess their exposure and implement interim protections, as no vendor patch is currently available.

Business Impact: High
Compensating Controls

Implement strict network segmentation isolating UFM to a management-only VLAN; restrict UFM web interface access by IP whitelist to authorized administrators only; deploy web application firewall rules targeting HTTP requests to the authorization component; implement continuous monitoring and alerting on UFM web interface access logs; disable remote UFM access if not operationally critical until patch availability.

Threat Intelligence Overview

EPSS Score
0.5%
Top 59% exploitable
Prevalence
Low
specialized InfiniBand fabric management platform for HPC and AI clusters
Data Quality
6 sources
Confidence: High

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 0.5%
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
Scheduled
Exploitation
None
System Exposure· derived
Controlled
Automatable
No
Human Impact
High
Technical Impact
Total

Priority Score

45
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +44
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

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