CVE-2025-33240
Published: 18 February 2026
Summary
CVE-2025-33240 is a high-severity Code Injection (CWE-94) vulnerability in Nvidia Megatron-Bridge. Its CVSS base score is 7.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 7.8th 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-2 (Flaw Remediation).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Directly prevents code injection by requiring validation and sanitization of malicious inputs to the data shuffling tutorial in NVIDIA Megatron Bridge.
Addresses the vulnerability through timely identification, testing, and installation of patches for the code injection flaw as provided in NVIDIA advisories.
Mitigates privilege escalation and high-impact effects like information disclosure and data tampering by enforcing least privilege on the low-privilege attacker context.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Local code injection (CWE-94) directly enables arbitrary code execution and privilege escalation from low-privileged context (T1068).
NVD Description
NVIDIA Megatron Bridge contains a vulnerability in a data shuffling tutorial, where malicious input could cause a code injection. A successful exploit of this vulnerability might lead to code execution, escalation of privileges, information disclosure, and data tampering.
Deeper analysisAI
CVE-2025-33240 is a code injection vulnerability (CWE-94) in a data shuffling tutorial within NVIDIA Megatron Bridge. Malicious input to this component can enable code execution, escalation of privileges, information disclosure, and data tampering. The vulnerability received a CVSS v3.1 base score of 7.8 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) and was published on 2026-02-18.
An attacker requires local access to the affected system, low attack complexity, and low privileges to exploit this issue without user interaction. Successful exploitation grants high-impact outcomes, including arbitrary code execution, privilege escalation from a low-privilege context, sensitive data exposure, and modification of data integrity.
Mitigation guidance is available in official advisories, including NVIDIA's security bulletin at https://nvidia.custhelp.com/app/answers/detail/a_id/5781, the NVD entry at https://nvd.nist.gov/vuln/detail/CVE-2025-33240, and the CVE record at https://www.cve.org/CVERecord?id=CVE-2025-33240.
Details
- CWE(s)