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NVIDIA Megatron Bridge CVE-2026-61753

| EUVDEUVD-2026-69309 HIGH
Path Traversal (CWE-22)
2026-09-01 psirt@nvidia.com GHSA-crjh-7w6m-w758
7.8
CVSS 3.1 · Vendor: nvidia
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Severity by source

Vendor (nvidia) PRIMARY
7.8 HIGH
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vuln.today AI
7.8 HIGH

Local attack vector and low-privilege requirement match a shared-host deserialization sink; full CIA impact consistent with arbitrary code execution.

3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (nvidia).

CVSS VectorVendor: nvidia

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Sep 01, 2026 - 16:34 vuln.today
CVE Published
Sep 01, 2026 - 16:17 cve.org
HIGH 7.8

DescriptionCVE.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.

AnalysisAI

Deserialization of untrusted data in NVIDIA Megatron Bridge enables a local, low-privileged attacker to achieve code execution, data tampering, and information disclosure on the affected host. The vulnerability carries a CVSS 3.1 score of 7.8 with a local attack vector, indicating that an attacker with an existing foothold on the system can escalate impact significantly. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
technique details hidden
Delivery
technique details hidden
Exploit
technique details hidden
Execution
technique details hidden
Impact
technique details hidden

Vulnerability AssessmentAI

Exploitation Exploitation requires a local, low-privilege operating system account on the host running NVIDIA Megatron Bridge (AV:L/PR:L per the CVSS vector). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 7.8 score with AV:L/AC:L/PR:L/UI:N reflects a realistic local exploitation scenario - an attacker who already holds a low-privilege user account can trigger the vulnerability without any additional complexity or user interaction. … 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 to obtain the exact patched version and apply the vendor-released update. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Identify and inventory all systems running NVIDIA Megatron Bridge, classify by environment (production vs. …

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Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-61753 vulnerability details – vuln.today

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