What is CVE-2025-33247?

CVE-2025-33247 is a high-severity vulnerability in Nvidia Megatron Lm, classified under Deserialization of Untrusted Data. CVSS score: 7.8/10. Published 2026-03-24.

How severe is CVE-2025-33247?

High severity. CVSS v3 base score is 7.8 out of 10.

Deserialization in Nvidia Megatron Lm

CVE-2025-33247

NVIDIA Megatron LM contains a vulnerability in quantization configuration loading, which could allow remote code execution. A successful exploit of this vulnerability might lead to code execution, escalation of privileges, information disc…

Vulnerability class: Insecure Deserialization

EPSS: 0.004 (58.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Nvidia Megatron Lm — versions All versions prior to 0.15.3

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

nvd.nist.gov/vuln/detail/CVE-2025-33247
www.cve.org/CVERecord
nvidia.custhelp.com/app/answers/detail/a_id/5769

Frequently asked questions

What is CVE-2025-33247?: CVE-2025-33247 is a high-severity vulnerability in Nvidia Megatron Lm, classified under Deserialization of Untrusted Data. CVSS score: 7.8/10. Published 2026-03-24.
How severe is CVE-2025-33247?: High severity. CVSS v3 base score is 7.8 out of 10.