### Security Bulletin - Megatron LM - October 2026 Updated 2026-10-13 NVIDIA has released a software update for NVIDIA® Megatron LM.

To protect your system, clone or update this software to version 0.17.1 or later from the NVIDIA/Megatron-LM GitHub repo.

Go to [NVIDIA Product Security](https://www.nvidia.com/security/) _______________________________________________________________________________________________________________________________________________ ### Details This section provides a summary of potential vulnerabilities that this security update addresses and their impact. Descriptions use [CWE™](https://cwe.mitre.org/), and base scores and vectors use [CVSS v3.1](https://www.first.org/cvss/specification-document) standards. | **CVE ID** | **Description** | **Vector** | **Base Score** | **Severity** | **CWE** | **Impacts** | | ---------- | ---------------- | ---------- | -------------- | ------------ | -------- | ------------ | | CVE-2026-65180 | NVIDIA Megatron-LM contains a vulnerability in checkpoint loading 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. | [CVSS:3.1
/AV:L
/AC:L
/PR:L
/UI:N
/S:U
/C:H
/I:H
/A:H](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) | 7.8 | HIGH | [CWE-502](https://cwe.mitre.org/data/definitions/502.html) | Code execution, escalation of privileges, data tampering, information disclosure | | CVE-2026-65110 | NVIDIA Megatron-LM contains a vulnerability in checkpoint loading where, an attacker could cause an RCE by convincing a user to load a maliciously crafted file. A successful exploit of this vulnerability might lead to code execution, escalation of privileges, information disclosure, and data tampering. | [CVSS:3.1
/AV:L
/AC:L
/PR:L
/UI:N
/S:U
/C:H
/I:H
/A:H](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) | 7.8 | HIGH | [CWE-502](https://cwe.mitre.org/data/definitions/502.html) | Code execution, escalation of privileges, data tampering, information disclosure | | CVE-2026-65104 | NVIDIA Megatron-LM for all platforms contains a vulnerability in inference, where an attacker could cause hash collisions in the cache used for inference requests. A successful exploit of this vulnerability might lead to data tampering and partial information disclosure. | [CVSS:3.1
/AV:N
/AC:H
/PR:L
/UI:N
/S:C
/C:L
/I:H
/A:N](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:N) | 7.1 | HIGH | [CWE-328](https://cwe.mitre.org/data/definitions/328.html) | Data tampering, information disclosure | The NVIDIA risk assessment is based on an average of risk across a diverse set of installed systems and might not represent the true risk to your local installation. NVIDIA recommends evaluating the risk to your specific configuration. ### Security Updates NVIDIA has released a software update for NVIDIA® Megatron LM.

To protect your system, clone or update this software to version 0.17.1 or later from the NVIDIA/Megatron-LM GitHub repo.

The following table lists the software products and versions affected, and the updated version available from nvidia.com that includes this security update. | **CVE Addressed** | **Affected Products** | **Platform or OS** | **Affected Versions** | **Updated Version** | | --------------------- | --------------------- | ----------------- | --------------------- | ------------------- | | CVE-2026-65180 | Megatron-LM | All platforms | 0 to 16.9 | 17.0 | | CVE-2026-65110 | Megatron-LM | All platforms | 0 to 17 | 17.1 | | CVE-2026-65104 | Megatron-LM | All platforms | 0 to 17 | 17.1 | ### Notes
### Acknowledgements CVE-2026-65180: Moomi Chen CVE-2026-65110: Justin Hart (Viridis Security) and Kandlaguduru Vamsi (Xh081iX) C H SAI LOHITH CVE-2026-65104: Tian Xia(Dem0), jianjun chen,Qi Wang(Eki) @Tsinghua University ### Get the Most Up-to-Date Product Security Information Visit the [NVIDIA Product Security](https://www.nvidia.com/security/) page to - Subscribe to security bulletin notifications - See the current list of NVIDIA security bulletins - Report a potential security issue in any NVIDIA supported product - Learn more about the vulnerability management process followed by the NVIDIA Product Security Incident Response Team (PSIRT) ### Revision History | **Revision** | **Date** | **Description** | | ------------ | -------- | --------------- | | 1.0.0 | 2026-10-13 | Initial Release | ### Support If you have any questions about this security bulletin, contact [NVIDIA Support](https://www.nvidia.com/object/support.html). ### Disclaimer ALL NVIDIA INFORMATION, DESIGN SPECIFICATIONS, REFERENCE BOARDS, FILES, DRAWINGS, DIAGNOSTICS, LISTS, AND OTHER DOCUMENTS (TOGETHER AND SEPARATELY, "MATERIALS") ARE BEING PROVIDED "AS IS." NVIDIA MAKES NO WARRANTIES, EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO THE MATERIALS, AND ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OR CONDITION OF TITLE, MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT, ARE HEREBY EXCLUDED TO THE MAXIMUM EXTENT PERMITTED BY LAW. Information is believed to be accurate and reliable at the time it is furnished. However, NVIDIA Corporation assumes no responsibility for the consequences of use of such information or for any infringement of patents or other rights of third parties that may result from its use. No license is granted by implication or otherwise under any patent or patent rights of NVIDIA Corporation. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. NVIDIA Corporation products are not authorized for use as critical components in life support devices or systems without express written approval of NVIDIA Corporation.