What is the CVSS score of CVE-2026-24149?

CVE-2026-24149 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

How to fix or mitigate CVE-2026-24149?

Within 24 hours: Identify all systems running NVIDIA Megatron-LM and isolate affected instances from production networks if operationally feasible. Within 7 days: Implement network segmentation to restrict access to Megatron-LM instances, disable untrusted data inputs, and deploy input validation/sanitization controls. Within 30 days: Develop a phased migration plan to alternative frameworks or await vendor patch; conduct forensic review for evidence of exploitation; implement enhanced logging and monitoring on all remaining instances.

AI / ML CVE-2026-24149

HIGH

Code Injection (CWE-94)

2026-02-03 psirt@nvidia.com

Privilege Escalation Information Disclosure Code Injection AI / ML

7.8

CVSS 3.1 · NVD

View

Attack ChainAIDerived

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

Access

Attacker creates malicious data input
Exploit

Data passed to vulnerable script
Execution

Code injection executed
Impact

Arbitrary code runs with user privileges

Vulnerability Assessment

Weakness	CWE CWE-94 OWASP Top 10:2025 A05:2025 - Injection ASVS 5.0 V1 - Encoding and Sanitization Code injection prevention, sandbox exec MITRE ATT&CK 2 techniques across 2 tactics: Execution, Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Exploitation Conditions	Local system access required with non-root user privileges. Vulnerable Megatron-LM script must process attacker-controlled data without sanitization. Applicable to all platforms running affected Megatron-LM versions.
Impact	CVSS 7.8 (HIGH). Attack vector: Local. Complexity: Low. Privileges required: Low. User interaction: None.
Exploit ScenarioDerived	An attacker could exploit this vulnerability to code execution, escalation of privileges, information disclosure, data tampering.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Local code injection in NVIDIA Megatron-LM allows authenticated users to achieve arbitrary code execution and privilege escalation through malicious input to vulnerable scripts. An attacker with local access can craft specially designed data to trigger unsafe code evaluation, enabling complete system compromise including data theft and modification. No patch is currently available for this vulnerability affecting all supported platforms.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 21:54 CVSS 7.8

NVIDIA Megatron-LM for all platforms contains a vulnerability in a script, where malicious data created by an attacker may cause a code injection issue. A successful exploit of this vulnerability may lead to code execution, escalation of privileges, information disclosure, data tampering. [CVSS 7.8 HIGH]

RemediationAI

Monitor vendor advisories for a patch.

Affected ProductsAI

NVIDIA Megatron-LM for all platforms contains a vulnerability in a script, where malicious data created by an attacker may cause a code injection issu

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

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

Technical ContextAI · show details

Classified as CWE-94 (Code Injection). NVIDIA Megatron-LM for all platforms contains a vulnerability in a script, where malicious data created by an attacker may cause a code injection issue. A successful exploit of this vulnerability may lead to code execution, escalation of privileges, information disclosure, data tampering.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.8 HIGH

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionCVE.org

Zero Day Initiative Advisories

ZDI-26-060 NVIDIA Megatron-LM load_base_checkpoint Deserialization of Untrusted Data Remote Code Execution Vulnerability Feb 2026

Executive ViewAI

Why It Matters

NVIDIA Megatron-LM contains a code injection vulnerability (CVE-2026-24149) that could allow attackers to execute arbitrary code and escalate privileges on affected systems. Organizations using this machine learning framework for training or inference workloads face immediate risk of compromise, data theft, and operational disruption. No patch is currently available, requiring immediate mitigation efforts.

Business Impact: High

Compensating Controls

Disable Megatron-LM functionality until patch availability; implement strict input validation and sanitization for all data sources feeding the framework; restrict network access via firewall/segmentation to trusted internal networks only; enforce run-time execution monitoring and anomaly detection; disable script execution features if not operationally critical; isolate Megatron-LM workloads in containerized environments with minimal privileges; monitor NVIDIA security advisories for patch release and apply immediately upon availability.

Threat Intelligence Overview

EPSS Score

0.0%

Top 96% exploitable

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

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 0.0%

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

Small

Automatable· derived

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +39

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Privilege Escalation HIGH

Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.

Information Disclosure MEDIUM

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

Code Injection CRITICAL

Code injection occurs when an application accepts user input and passes it directly into a language interpreter or evaluator without proper sanitization.