Advisory Details

December 1st, 2025

NVIDIA Megatron load_common Deserialization of Untrusted Data Remote Code Execution Vulnerability

ZDI-25-1038
ZDI-CAN-27201

CVE ID CVE-2025-23357
CVSS SCORE 7.8, AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS NVIDIA
AFFECTED PRODUCTS Megatron
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of NVIDIA Megatron. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the load_common function. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of root.

ADDITIONAL DETAILS NVIDIA has issued an update to correct this vulnerability. More details can be found at:
https://nvidia.custhelp.com/app/answers/detail/a_id/5712
DISCLOSURE TIMELINE
  • 2025-05-22 - Vulnerability reported to vendor
  • 2025-12-01 - Coordinated public release of advisory
  • 2025-12-01 - Advisory Updated
CREDIT Peter Girnus (@gothburz) of Trend Zero Day Initiative
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