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Vulnerability record · CVE-2025-33248 · published 24 March 2026

CVE-2025-33248: Nvidia megatron-lm deserialization of untrusted data vulnerability

Nvidia · Megatron Lm

NVIDIA Megatron-LM contains a vulnerability in the hybrid conversion script where an Attacker may cause an RCE by convincing a user to load a maliciously crafted file. A successful exploit of this vulnerability may lead to code execution, escalation of privileges, information disclosure, and data tampering.

7.8 CVSS 3.1 High EPSS 0.21% · top 90.2% CWE-502 · Deserialization of untrusted data
7.8CVSS 3.1 base score
0.21%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

Description

NVIDIA Megatron-LM contains a vulnerability in the hybrid conversion script where an Attacker may cause an RCE by convincing a user to load a maliciously crafted file. A successful exploit of this vulnerability may lead to code execution, escalation of privileges, information disclosure, and data tampering.

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://nvd.nist.gov/vuln/detail/CVE-2025-33248 Third Party AdvisoryUS Government Resource
https://nvidia.custhelp.com/app/answers/detail/a_id/5769 Vendor Advisory
https://www.cve.org/CVERecord?id=CVE-2025-33248 Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.8CVE-2026-24150Nvidia megatron-lm deserialization of untrusted data vulnerabilityNVIDIA Megatron-LM contains a vulnerability in checkpoint loading where an Attacker may cause an RCE by convincing a user to load a maliciously craft…EPSS 0.21%7.8CVE-2026-24151Nvidia megatron-lm deserialization of untrusted data vulnerabilityNVIDIA Megatron-LM contains a vulnerability in inferencing where an Attacker may cause an RCE by convincing a user to load a maliciously crafted inpu…EPSS 0.21%7.8CVE-2026-24152Nvidia megatron-lm deserialization of untrusted data vulnerabilityNVIDIA Megatron-LM contains a vulnerability in checkpoint loading where an Attacker may cause an RCE by convincing a user to load a maliciously craft…EPSS 0.21%7.8CVE-2025-33247Nvidia megatron-lm deserialization of untrusted data vulnerabilityNVIDIA Megatron LM contains a vulnerability in quantization configuration loading, which could allow remote code execution. A successful exploit of t…EPSS 0.32%7.8CVE-2025-23353Nvidia megatron-lm code injection vulnerabilityNVIDIA Megatron-LM for all platforms contains a vulnerability in the msdp preprocessing script where malicious data created by an attacker may cause …EPSS 0.24%7.8CVE-2025-23354Nvidia megatron-lm code injection vulnerabilityNVIDIA Megatron-LM for all platforms contains a vulnerability in the ensemble_classifer script where malicious data created by an attacker may cause …EPSS 0.24%7.8CVE-2025-23348Nvidia megatron-lm code injection vulnerabilityNVIDIA Megatron-LM for all platforms contains a vulnerability in the pretrain_gpt script, where malicious data created by an attacker may cause a cod…EPSS 0.24%7.8CVE-2025-23349Nvidia megatron-lm code injection vulnerabilityNVIDIA Megatron-LM for all platforms contains a vulnerability in the tasks/orqa/unsupervised/nq.py component, where an attacker may cause a code inje…EPSS 0.24%

Source: NIST National Vulnerability Database (record CVE-2025-33248), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.