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NVIDIA Triton Inference Server CVE-2026-24206

| EUVDEUVD-2026-31049 CRITICAL
Authentication Bypass Using an Alternate Path or Channel (CWE-288)
2026-05-20 nvidia GHSA-8pxv-chrc-9c6j
9.8
CVSS 3.1 · NVD
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Attack ChainAIDerived

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

  1. Access
    Discover exposed Triton endpoint
  2. Delivery
    Send crafted request to unauthenticated path
  3. Exploit
    Bypass authentication check
  4. Execution
    Invoke protected model/management API
  5. Impact
    Disclose model data or disrupt service

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Alternate path authentication
Exploitation Conditions

No special conditions - remote unauthenticated exploitation against default configurations of NVIDIA Triton Inference Server is possible per the CVSS vector (AV:N/AC:L/PR:N/UI:N). Limiting factors are network reachability to the Triton HTTP (8000), gRPC (8001), or metrics (8002) listener - Triton is typically deployed inside private subnets or Kubernetes clusters rather than directly internet-exposed, so practical exploitability hinges on whether the targeted instance is reachable from an attacker-controlled position (co-tenant, internal user, exposed cloud endpoint, or chained from another foothold). Impact is bounded to low confidentiality, integrity, and availability per the CVSS vector, indicating partial rather than total compromise of the service.

Impact

The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L) describes a network-reachable, low-complexity attack requiring no privileges and no user interaction, yielding low impact across confidentiality, integrity, and availability - producing a base score of 7.3 (High). Although no public exploit has been identified at time of analysis and the CVE is not in CISA KEV, the unauthenticated network-exploitable profile makes Triton instances exposed beyond a trusted perimeter (cloud-hosted inference endpoints, dev/test rigs reachable from corporate networks) priority targets. EPSS probability was not included in the provided intelligence, so widespread exploitation likelihood cannot be quantified; defenders should treat this as a high-priority patch for any internet-facing or multi-tenant Triton deployment but a moderate priority for internal, network-segmented services. The description is generic about which authentication path is bypassed - the vendor advisory at nvidia.custhelp.com (answer 5828) should be consulted to confirm whether HTTP, gRPC, or a management endpoint is the affected surface.

Exploit ScenarioDerived

An attacker on the same network as a Triton Inference Server (for example a co-tenant in a cloud VPC, an internal user, or anyone reaching an internet-exposed inference endpoint) sends a crafted HTTP or gRPC request to a route that fails to enforce authentication, gaining access to protected model management, inference, or metrics functionality. Depending on which endpoint is bypassed, the attacker could enumerate or pull deployed model artifacts (information disclosure), unload or replace models (denial of service), or invoke privileged management actions (privilege escalation). No public exploit is identified at time of analysis, but the low attack complexity and lack of required privileges make weaponization straightforward once the bypassable path is identified from the vendor advisory.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – May 20, 2026

Authentication bypass in NVIDIA Triton Inference Server allows remote unauthenticated attackers to circumvent access controls, potentially leading to privilege escalation, denial of service, or information disclosure. With a CVSS 7.3 score and network-reachable attack vector (AV:N/AC:L/PR:N/UI:N), the flaw is exploitable without user interaction or credentials, though no public exploit identified at time of analysis. The vulnerability is not currently listed in CISA KEV, and EPSS data was not provided in the source intelligence.

RemediationAI

Consult the NVIDIA security bulletin at https://nvidia.custhelp.com/app/answers/detail/a_id/5828 to identify the fixed Triton Inference Server release and upgrade to that version - exact fixed version is not stated in the provided intelligence, so do not assume a specific tag. As compensating controls until patched, place Triton behind an authenticating reverse proxy (e.g., an ingress enforcing mTLS or OAuth) so the bypassable path is unreachable directly, restrict the HTTP (default 8000), gRPC (8001), and metrics (8002) ports to allow-listed client subnets via host or cloud firewall, and disable the model-control and repository management endpoints by running with --model-control-mode=none if the deployment does not require dynamic model loading (trade-off: prevents hot-loading new models without a restart). For multi-tenant or shared environments, isolate each Triton instance per tenant rather than relying on application-layer auth.

Affected VersionsENISA

Triton Inference Server 0 <r26.03

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Technical ContextAI · show details

NVIDIA Triton Inference Server is an open-source serving framework used to deploy AI/ML models at scale across GPU and CPU infrastructure, supporting frameworks such as TensorFlow, PyTorch, ONNX, and TensorRT. It exposes HTTP/REST and gRPC endpoints for inference, model management, and metrics, frequently deployed in MLOps pipelines and production AI serving stacks. The root cause is CWE-288 (Authentication Bypass Using an Alternate Path or Channel), meaning an attacker can reach protected functionality through a route that fails to enforce the intended authentication check, bypassing the access control layer entirely rather than defeating credentials.

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Severity by source

NVD PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Lifecycle Timeline

2
Severity Changed
Jul 24, 2026 - 10:22 NVD
HIGH CRITICAL
CVSS changed
Jul 24, 2026 - 10:22 NVD
7.3 (HIGH) 9.8 (CRITICAL)

DescriptionNVD

NVIDIA Triton Inference Server contains a vulnerability where an attacker could cause an authentication bypass. A successful exploit of this vulnerability might lead to escalation of privileges, denial of service, or information disclosure.

Executive ViewAI

Why It Matters

NVIDIA Triton Inference Server contains an unauthenticated remote authentication bypass (CVE-2026-24206) that allows attackers to circumvent access controls without credentials, risking unauthorized data access and system compromise. Any organization operating Triton-dependent ML workloads accessible over the network is exposed to immediate risk; the absence of a vendor patch and straightforward exploitability create critical operational urgency. This flaw can lead to model theft, inference pipeline disruption, and disclosure of sensitive training data or model weights.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: (1) Network segmentation-restrict Triton to internal-only access via firewall egress rules; (2) Reverse-proxy authentication-enforce API keys or mutual TLS at an API gateway before traffic reaches Triton; (3) Rate limiting and request logging-detect and throttle suspicious access patterns; (4) Segmented infrastructure-isolate Triton nodes to a dedicated network zone with restricted lateral movement. These controls reduce attack surface but do not eliminate the authentication bypass-vendor patch is required for full remediation.

Threat Intelligence Overview

EPSS Score
0.1%
Top 77% exploitable
Social Media
1
Sightings
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 CRITICAL
CISA KEV No
Public POC No
EPSS 0.1%
Patch available No
Active threat No
Deciding rule
CRITICAL severity
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
Open
Automatable
Yes
Human Impact
High
Technical Impact
Partial

Priority Score

49
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +49
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.

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

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

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