CVE-2026-65180 Deserialization in Megatron-LM
An attacker can achieve remote code execution and other impacts by tricking a user into loading a malicious checkpoint file in NVIDIA Megatron-LM.
- 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-2026-65180?
CVE-2026-65180 is a high-severity unsafe deserialization vulnerability in NVIDIA Megatron-LM, published on 13 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
NVIDIA Megatron-LM contains a vulnerability in checkpoint loading where an Attacker may cause an RCE by convincing a user to load a maliciously crafted file. A successful exploit of this vulnerability may lead to code execution, escalation of privileges, information disclosure, and data tampering.
Weakness: CWE-502
Which versions are affected by CVE-2026-65180?
How do I fix CVE-2026-65180?
No fix has been published for CVE-2026-65180 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-2026-65180 being exploited?
There is no known exploitation of CVE-2026-65180 in the wild and no public exploit code.
Sources
Also known as GHSA-42r9-xwp2-pv6v.