CVE-2026-61753: NVIDIA Megatron Bridge deserialization of untrusted data

CVE-2026-61753 · Severity: high · CVSS 7.8 · Published 2026-09-01

NVIDIA Megatron Bridge is a tool used to manage communication and data transfer in large-scale machine learning systems. A vulnerability in how it processes untrusted data could allow an attacker to execute arbitrary code, modify data, or steal sensitive information from affected systems.

Technologies: Nvidia Megatron-Bridge, Nvidia Nemo Megatron Bridge. Vendors: Nvidia.

Quick answers

Is CVE-2026-61753 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-61753 being exploited in the wild.
How severe is CVE-2026-61753?
High severity, with a CVSS score of 7.8, published 1 September 2026.
Which products and versions are affected?
NVIDIA Megatron Bridge.
Is there a fix for CVE-2026-61753?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-61753 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-61753?
Check whether you run Nvidia Megatron-Bridge or Nvidia Nemo Megatron Bridge. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is a deserialization flaw in NVIDIA Megatron Bridge that permits untrusted data to be processed without proper validation. An attacker with network access to systems running the affected software could exploit this to achieve remote code execution, data tampering, and information disclosure. The attack vector and specific preconditions (such as authentication requirements) are not detailed in available sources. A patch or mitigation guidance should be consulted from NVIDIA's product security advisories.

Affected products

  • NVIDIA Megatron Bridge

Timeline

  • 2026-09-01: disclosed

References

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