CVE-2026-61755: NVIDIA Megatron Bridge unsafe deserialization

CVE-2026-61755 · Severity: high · CVSS 7.8 · Published 2026-09-01

NVIDIA Megatron Bridge is a component used in machine learning pipelines to facilitate communication and data transfer. An attacker could exploit an unsafe deserialization vulnerability by sending specially crafted data, potentially leading to arbitrary code execution, unauthorized data modification, or information disclosure on affected systems.

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

Quick answers

Is CVE-2026-61755 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-61755 being exploited in the wild.
How severe is CVE-2026-61755?
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-2026-61755?
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-2026-61755 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-61755?
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 exists in NVIDIA Megatron Bridge due to unsafe deserialization of untrusted data. An attacker with network access could craft and send malicious serialized data to the affected component, bypassing normal input validation. Successful exploitation would allow remote code execution, data tampering, or information disclosure depending on system context and privileges. The vulnerability has been publicly disclosed but is not reported as actively exploited in the wild at this time.

Affected products

  • NVIDIA Megatron Bridge

Timeline

  • 2026-09-01: disclosed

References

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