EUVD-2026-69326
GHSA-fv9x-m62j-9qq6
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local IPC deserialization with low-privilege user access required; code execution yields full CIA impact with no scope change.
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 local attacker with low privileges to achieve arbitrary code execution, data tampering, and information disclosure on affected systems. The CVSS 3.1 score of 7.8 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) reflects full CIA impact from a local, low-complexity attack requiring no user interaction, making this a meaningful privilege escalation and code execution risk in shared compute environments such as multi-tenant GPU training clusters. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a local account with at minimum low-level operating system privileges on the host running NVIDIA Megatron Bridge - the CVSS vector (AV:L/PR:L) confirms both conditions. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:L/AC:L/PR:L/UI:N) constrains exploitation to local, authenticated (low-privilege) access, which limits the attack surface compared to network-exposed vulnerabilities. … 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 PSIRT advisory at https://github.com/NVIDIA/product-security/tree/main/2026/5868 for the official patch or upgrade path; no exact fixed version number was confirmed from the available data, so citing a specific version here would be speculative. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit all systems running NVIDIA Megatron Bridge to identify and document installed versions, particularly those deployed in multi-tenant GPU environments; prioritize network isolation of systems containing sensitive training data or proprietary models. …
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Same weakness CWE-502 – Deserialization of Untrusted Data
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External POC / Exploit Code
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