EUVD-2026-69310
GHSA-wq3g-9gwx-6349
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local attack vector and low privilege requirement align with deserialization accessible to co-resident processes; full C/I/A impact is appropriate for arbitrary code execution via gadget chain.
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-privilege access to execute arbitrary code, tamper with application data, and exfiltrate sensitive information. The CVSS vector (AV:L/AC:L/PR:L/UI:N) confirms exploitation is bounded to local authenticated users or processes, but the full C:H/I:H/A:H impact triad makes successful exploitation highly damaging within that local scope. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires local authenticated access to the host system running NVIDIA Megatron Bridge with at least low-privilege credentials (CVSS PR:L). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS base score of 7.8 (High) reflects a genuinely impactful vulnerability, but the local attack vector (AV:L) substantially limits real-world exposure compared to network-exploitable deserialization flaws. … 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 specific patched release; no exact fix version is confirmed in the currently available CVE data and one should not be assumed. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all systems running NVIDIA Megatron Bridge and document their versions and privilege separation controls. …
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Same weakness CWE-502 – Deserialization of Untrusted Data
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External POC / Exploit Code
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