Quick answers
- Is CVE-2026-61778 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-61778 being exploited in the wild.
- How severe is CVE-2026-61778?
- 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-2026-61778?
- 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-2026-61778 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-61778?
- 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 where untrusted data is deserialized without proper validation in NVIDIA Megatron Bridge. An attacker who can control serialized input to the application can leverage this to achieve remote code execution, data tampering, and information disclosure. The attack vector and specific preconditions (such as whether network access or authentication is required) are not detailed in the available information. A fix or patch status is not indicated in the advisory.
Affected products
- NVIDIA Megatron Bridge
Timeline
- 2026-09-01: disclosed