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CVE-2026-53805: NVIDIA SIL GEN3C Unauthenticated RCE via Pickle Deserialization in Inference API

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-17 · updated 2026-10-26
• Weakness: CWE-502

Description

NVIDIA Spatial Intelligence Lab's (SIL) GEN3C contains an unauthenticated remote code execution vulnerability in the inference API server where the /request-inference and /seed-model endpoints deserialize raw HTTP request bodies using Python's pickle.loads() without authentication or input validation. Attackers can supply a crafted payload containing a __reduce__ gadget to the inference API port to achieve remote code execution as the inference process.

Affected products

• nv-tlabs GEN3C: all versions

References

• https://github.com/nv-tlabs/GEN3C/commit/db2ffe12ced12ddafcec5e0422ee46ce8520746b
• https://github.com/nv-tlabs/GEN3C/pull/62
• https://github.com/nv-tlabs/GEN3C/pull/63
• https://www.vulncheck.com/advisories/nvidia-sil-gen3c-unauthenticated-rce-via-pickle-deserialization-in-inference-api

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