CVE-2026-61777 Deserialization in Megatron Bridge
An attacker can exploit untrusted data deserialization in NVIDIA Megatron Bridge to execute code, tamper with data, or disclose information.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-61777?
CVE-2026-61777 is a high-severity unsafe deserialization vulnerability in NVIDIA Megatron Bridge, published on 1 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
NVIDIA Megatron Bridge contains a vulnerability where an attacker could cause a deserialization of untrusted data. A successful exploit of this vulnerability might lead to code execution, data tampering, and information disclosure.
Weakness: CWE-502
Which versions are affected by CVE-2026-61777?
It affects 1 product.
Products include Nvidia Nemo Megatron Bridge.
How do I fix CVE-2026-61777?
No fix has been published for CVE-2026-61777 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-61777 being exploited?
There is no known exploitation of CVE-2026-61777 in the wild and no public exploit code.
Other vulnerabilities in NVIDIA Megatron Bridge
Sources
Also known as GHSA-hg5m-pcc2-c3v2.