EUVD-2026-69317
GHSA-hffg-98mx-c924
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local vector with low privilege required is consistent with supplying malicious serialized data to a local process; full C/I/A impact reflects arbitrary code execution via deserialization.
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 execute arbitrary code, tamper with data, and disclose sensitive information on affected systems. The vulnerability stems from CWE-502 (Deserialization of Untrusted Data), where a crafted malicious payload supplied to the Bridge component triggers unsafe deserialization, granting the attacker full control over the vulnerable process. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an attacker to have a low-privilege local account on the system running NVIDIA Megatron Bridge (PR:L, AV:L per CVSS vector). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 score with a local attack vector (AV:L) and low privilege requirement (PR:L) accurately reflects a serious but access-constrained risk. … 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 | The primary remediation step is to consult the NVIDIA Product Security advisory at https://github.com/NVIDIA/product-security/tree/main/2026/5868 for the vendor-released patch and exact fixed version. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all systems running NVIDIA Megatron Bridge and identify their criticality and local user access scope. …
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Same weakness CWE-502 – Deserialization of Untrusted Data
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External POC / Exploit Code
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