CVE-2026-24149
Published: 03 February 2026
Summary
CVE-2026-24149 is a high-severity Code Injection (CWE-94) vulnerability. Its CVSS base score is 7.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Command and Scripting Interpreter (T1059); ranked at the 6.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-16 (Memory Protection).
Deeper analysis
CVE-2026-24149 is a code injection vulnerability (CWE-94) in a script within NVIDIA Megatron-LM, affecting all supported platforms. Published on 2026-02-03, it has a CVSS v3.1 base score of 7.8 (High), with vector AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Malicious data crafted by an attacker can trigger the issue, potentially resulting in arbitrary code execution, privilege escalation, information disclosure, and data tampering.
The vulnerability requires local access to the system with low privileges, low attack complexity, and no user interaction. A local attacker possessing limited user rights could exploit the script's handling of malicious input to inject and execute code, achieving high-impact confidentiality, integrity, and availability compromises on the affected Megatron-LM instance.
For mitigation details, refer to the official advisories at https://nvd.nist.gov/vuln/detail/CVE-2026-24149 and https://www.cve.org/CVERecord?id=CVE-2026-24149, which provide further guidance on patches or workarounds.
As an AI/ML framework for training large language models, Megatron-LM's exposure highlights risks in high-performance computing environments for generative AI workloads. No public evidence of real-world exploitation is available at this time.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-5178
Vulnerability details
NVIDIA Megatron-LM for all platforms contains a vulnerability in a script, where malicious data created by an attacker may cause a code injection issue. A successful exploit of this vulnerability may lead to code execution, escalation of privileges, information disclosure,…
more
data tampering.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
CWE-94 code injection in local script directly enables arbitrary code execution (T1059) and privilege escalation (T1068) with low-priv local access.
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Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly prevents code injection by validating and sanitizing malicious data inputs processed by the vulnerable Megatron-LM script.
Remediates the specific code injection flaw in the NVIDIA Megatron-LM script through timely patching as referenced in official advisories.
Mitigates arbitrary code execution resulting from the injection vulnerability via memory protections like DEP and ASLR.