Quick answers
- Is CVE-2026-61777 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-61777 being exploited in the wild.
- How severe is CVE-2026-61777?
- 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-2026-61777?
- 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.
- Am I affected by CVE-2026-61777?
- 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 and involves unsafe deserialization of untrusted data. An attacker can supply malicious serialized objects that, when deserialized by the application, lead to arbitrary code execution. The attack vector and authentication requirements are not fully specified in the available information, but deserialization vulnerabilities typically occur when the application processes untrusted input without proper validation. A successful exploit can result in remote code execution, data tampering, and information disclosure depending on the application context and privileges.
Affected products
- NVIDIA Megatron Bridge
Timeline
- 2026-09-01: disclosed