EUVD-2026-69315
GHSA-xgrm-2qcq-x4pg
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local-only deserialization exploit requires a low-privilege OS account to supply crafted data; arbitrary code execution yields full C/I/A impact on the vulnerable system.
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 allows a low-privileged local attacker to achieve arbitrary code execution, data tampering, and information disclosure on affected systems. The flaw (CWE-502) requires only an authenticated local OS session - no elevated privileges or user interaction - making it exploitable by any standard user on a host running the Bridge component. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | A low-privilege local OS account on the target host is required (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 a full C/I/A triad impact, but the local attack vector (AV:L) is a meaningful constraint - remote network exploitation is not possible, and an attacker must already hold a local OS foothold. … 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 NVIDIA's official security advisory at https://github.com/NVIDIA/product-security/tree/main/2026/5868 for the specific patched version and upgrade instructions; no fixed version number was available in the data at the time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify all systems running NVIDIA Megatron Bridge and assess exposure to untrusted local users. …
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Deserialization of untrusted data in NVIDIA Megatron Bridge enables a local low-privileged attacker to achieve code exec
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Same weakness CWE-502 – Deserialization of Untrusted Data
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External POC / Exploit Code
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