Vulnerability · Published Mar 24, 2026 · Assigned by nvidia
CVE-2025-33248
High 7.8
In plain English
A high-severity unsafe deserialization in Megatron LM from NVIDIA. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities).
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.2%top 88.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| NVIDIA | Megatron LM | All versions prior to 0.15.3 |
Weakness: CWE-502 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H