CVE-2025-23353 Code injection in Megatron-LM

High 7.8 Published 24 Sep 2025 Updated 24 Sep 2025

Attackers can execute code, escalate privileges, and tamper with data via malicious input in the msdp preprocessing script.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-23353?

CVE-2025-23353 is a high-severity code injection vulnerability in NVIDIA Megatron-LM, published on 24 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

NVIDIA Megatron-LM for all platforms contains a vulnerability in the msdp preprocessing script where malicious data created by an attacker may cause an injection. A successful exploit of this vulnerability may lead to code execution, escalation of privileges, Information disclosure, and data tampering.

Weakness: CWE-94

Which versions are affected by CVE-2025-23353?

It affects 1 product.

Products include Nvidia Megatron-Lm.

How do I fix CVE-2025-23353?

No fix has been published for CVE-2025-23353 yet. Limit exposure of the affected software until one is available.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2025-23353 being exploited?

There is no known exploitation of CVE-2025-23353 in the wild and no public exploit code.

Sources

Also known as GHSA-h779-m55x-x42q.