EUVD-2026-84406
GHSA-4v72-rpj8-4xq7
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Pickle deserialization gives full C/I/A impact with low complexity; a .pkl artifact can arrive over the network (AV:N) but execution requires the victim to load it (UI:R), and no privileges are needed (PR:N).
Primary rating from Vendor (nvidia).
CVSS VectorVendor: nvidia
Lifecycle Timeline
3DescriptionCVE.org
NVIDIA NeMo contains a vulnerability in the TabularTokenizer class where it deserializes an untrusted, attacker-controlled .pkl file via pickle.load() without validation. A successful exploit of this vulnerability may lead to code execution, data tampering, denial of service, and information disclosure.
Articles & Coverage 1
AnalysisAI
Code execution, data tampering, denial of service, and information disclosure are all reachable in NVIDIA NeMo Speech 0.0 through 2.9 because its TabularTokenizer class deserializes attacker-supplied .pkl artifacts through pickle.load() with no validation. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, 8.8 High) marks this as unauthenticated but user-interaction-gated: nothing executes until a NeMo user obtains and loads the malicious tokenizer or model file, so the attack depends on a social-engineering or supply-chain delivery step rather than a directly triggerable remote request. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the victim to load an attacker-controlled .pkl file through NVIDIA NeMo's TabularTokenizer class, which calls pickle.load() without validation. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The vendor CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, 8.8 High) describes a full-triad-impact deserialization flaw reachable over the network but requiring user interaction (UI:R). … 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 | No vendor-released patch is identified in the provided data, so confirm fix availability and the exact fixed version through NVIDIA's product security advisory at https://github.com/NVIDIA/product-security/tree/main/2026/5885 (also reachable via https://nvd.nist.gov/vuln/detail/CVE-2026-65179) before upgrading - do not assume or invent a version number. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all NVIDIA NeMo Speech 0.0 through 2.9 installations, instruct users not to load .pkl tokenizer or model artifacts from untrusted or unverified sources, and block or quarantine inbound .pkl files at email/web gateways and shared repositories. …
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External POC / Exploit Code
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