EUVD-2026-69327
GHSA-mjf4-r9vv-8697
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local vector and low-privilege requirement confirmed by description of internal deserialization path; full C/I/A impact reflects code execution capability.
Primary rating from Vendor (nvidia).
CVSS VectorVendor: nvidia
Lifecycle Timeline
2DescriptionCVE.org
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.
Articles & Coverage 2
AnalysisAI
Deserialization of untrusted data in NVIDIA Megatron Bridge enables a local low-privileged attacker to achieve code execution, corrupt data, and exfiltrate sensitive information. The vulnerability (CWE-502) is exploitable locally with low privileges and no user interaction, yielding a CVSS 7.8 High rating with full confidentiality, integrity, and availability impact. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an attacker to have an interactive or programmatic local session on the host running NVIDIA Megatron Bridge with at least low-privilege access (PR:L per CVSS vector). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 High score reflects worst-case impact: full C/H/I/H/A:H if exploitation succeeds. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Consult the NVIDIA Product Security advisory at https://github.com/NVIDIA/product-security/tree/main/2026/5868 and apply the vendor-released patch once confirmed. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all systems running NVIDIA Megatron Bridge and implement emergency restrictions limiting local user access to essential personnel only. …
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More in Nemo Megatron Bridge
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Local code execution in NVIDIA Megatron Bridge exploits unsafe deserialization of attacker-controlled data, allowing a l
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Deserialization of untrusted data in NVIDIA Megatron Bridge exposes local users to code execution, data tampering, and i
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Deserialization of untrusted data in NVIDIA Megatron Bridge allows a local low-privileged attacker to achieve arbitrary
Same weakness CWE-502 – Deserialization of Untrusted Data
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External POC / Exploit Code
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