{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-90777", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-09-13T11:15:46.288Z", "datePublished": "2026-09-13T11:42:27.045Z", "dateUpdated": "2026-09-13T11:42:27.045Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-09-13T11:42:27.045Z"}, "datePublic": "2026-08-25T00:00:00.000Z", "title": "ESPnet before 202609 Remote Code Execution via Unsafe Deserialization", "descriptions": [{"lang": "en", "value": "ESPnet before 202609 deserializes pretrained model checkpoints using torch.load with weights_only=False, allowing arbitrary code execution from attacker-supplied files. Attackers can craft malicious checkpoint files that execute code during deserialization when loaded through the initialization or fine-tuning path."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Deserialization of Untrusted Data", "cweId": "CWE-502", "type": "CWE"}]}], "affected": [{"vendor": "espnet", "product": "espnet", "defaultStatus": "unaffected", "packageURL": "pkg:pypi/espnet", "versions": [{"version": "0", "status": "affected", "versionType": "custom", "lessThan": "202609"}, {"version": "202609", "status": "unaffected", "versionType": "custom"}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 8.7, "baseSeverity": "HIGH"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH"}}], "references": [{"url": "https://github.com/espnet/espnet/security/advisories/GHSA-64f6-3gqc-r926", "name": "GitHub Security Advisory (GHSA-64f6-3gqc-r926)", "tags": ["vendor-advisory"]}, {"url": "https://github.com/espnet/espnet/commit/91ca045fc179f29bc7b7fe05cd852aea65310003", "name": "Patch Commit", "tags": ["patch"]}, {"url": "https://github.com/espnet/espnet/blob/v.202511/espnet2/torch_utils/load_pretrained_model.py#L99", "name": "Unsafe torch.load call at v.202511", "tags": ["technical-description"]}, {"url": "https://github.com/espnet/espnet/releases/tag/v.202609", "name": "ESPnet v.202609 Release Notes", "tags": ["release-notes"]}, {"url": "https://github.com/espnet/espnet", "tags": ["product"]}, {"name": "VulnCheck Advisory: ESPnet before 202609 Remote Code Execution via Unsafe Deserialization", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/espnet-before-202609-remote-code-execution-via-unsafe-deserialization"}], "credits": [{"lang": "en", "value": "Jaime Ram\u00edrez (JaimeRamirez-coder)", "type": "reporter"}, {"lang": "en", "value": "arexgodofwar", "type": "reporter"}, {"lang": "en", "value": "Snakinya", "type": "reporter"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageURL": "pkg:pypi/espnet", "product": "espnet", "vendor": "espnet", "versions": [{"lessThan": "202609", "status": "affected", "version": "0", "versionType": "custom"}, {"status": "unaffected", "version": "202609", "versionType": "custom"}]}], "source": "disclosure@vulncheck.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "ESPnet before 202609 deserializes pretrained model checkpoints using torch.load with weights_only=False, allowing arbitrary code execution from attacker-supplied files. Attackers can craft malicious checkpoint files that execute code during deserialization when loaded through the initialization or fine-tuning path."}], "id": "CVE-2026-90777", "lastModified": "2026-09-13T12:17:16.690", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "disclosure@vulncheck.com", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}]}, "published": "2026-09-13T12:17:16.690", "references": [{"source": "disclosure@vulncheck.com", "url": "https://github.com/espnet/espnet"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/espnet/espnet/blob/v.202511/espnet2/torch_utils/load_pretrained_model.py#L99"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/espnet/espnet/commit/91ca045fc179f29bc7b7fe05cd852aea65310003"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/espnet/espnet/releases/tag/v.202609"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/espnet/espnet/security/advisories/GHSA-64f6-3gqc-r926"}, {"source": "disclosure@vulncheck.com", "url": "https://www.vulncheck.com/advisories/espnet-before-202609-remote-code-execution-via-unsafe-deserialization"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-502"}], "source": "disclosure@vulncheck.com", "type": "Primary"}]}

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