CVE-2025-33204: Code Injection in NVIDIA NeMo Framework

The core of this vulnerability lies in the NLP and LLM components of NeMo Framework. An attacker can craft malicious data that, when processed by the framework, results in code injection. This injection can then be leveraged to execute arbitrary code on the system running the framework. The potential impact is significant, including privilege escalation, allowing an attacker to gain higher-level access. Data disclosure is another serious risk, as an attacker could potentially access sensitive information processed by the framework. Furthermore, the attacker could tamper with data, corrupting models or manipulating outputs. The blast radius extends to any system utilizing vulnerable versions of NeMo Framework for NLP or LLM tasks.

1. Reserved2025-04-15
2. Published2025-11-25
3. Modified2026-02-26
4. EPSS updated2026-03-23

The primary mitigation is to upgrade to NVIDIA NeMo Framework version 2.5.1 or later. If an immediate upgrade is not feasible due to compatibility issues or breaking changes, consider implementing input validation and sanitization on all data processed by the framework. Specifically, carefully scrutinize data sources and implement robust checks to prevent the injection of malicious code. While a direct WAF rule is unlikely to be effective, network segmentation can limit the potential impact of a successful exploit. Monitor system logs for unusual activity, particularly processes attempting to execute code from unexpected locations. After upgrading, confirm the fix by attempting to process known malicious data samples and verifying that code injection is prevented.