Quick answers
- Is CVE-2026-61763 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-61763 being exploited in the wild.
- How severe is CVE-2026-61763?
- 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-2026-61763?
- 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-2026-61763 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-61763?
- 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 of untrusted data flaw in NVIDIA Megatron Bridge. An attacker with the ability to provide malicious serialized data can exploit this weakness to achieve arbitrary code execution, data tampering, and information disclosure. The attack vector and specific preconditions (network accessibility, authentication requirements) are not detailed in the available advisory text, but successful exploitation could compromise the integrity and confidentiality of the distributed training system.
Affected products
- NVIDIA Megatron Bridge
Timeline
- 2026-09-01: disclosed