{"api_version":"1","generated_at":"2026-08-01T18:36:14+00:00","cve":"CVE-2026-47876","urls":{"html":"https://cve.report/CVE-2026-47876","api":"https://cve.report/api/cve/CVE-2026-47876.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-47876","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-47876"},"summary":{"title":"VMXNET3 out-of-bounds write vulnerability","description":"VMware ESX contains an out-of-bounds write vulnerability in the VMXNET3 virtual network adapter. A malicious actor with local administrative privileges on a virtual machine with VMXNET3 virtual network adapter may exploit this issue to execute code on the host. Non VMXNET3 virtual adapters are not affected by this issue.","state":"PUBLISHED","assigner":"vmware","published_at":"2026-07-30 13:16:51","updated_at":"2026-07-30 14:16:58"},"problem_types":["CWE-787","CWE-787 CWE-787 Out-of-bounds write"],"metrics":[{"version":"3.1","source":"security@vmware.com","type":"Secondary","score":"9.3","severity":"CRITICAL","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","baseScore":9.3,"baseSeverity":"CRITICAL","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"CVSS","score":"9.3","severity":"CRITICAL","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","data":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":9.3,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/38017","name":"https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/38017","refsource":"security@vmware.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-47876","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-47876","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"VMware","product":"Cloud Foundation","version":"affected 9.1.x.x","platforms":[]},{"source":"CNA","vendor":"VMware","product":"Cloud Foundation","version":"affected 9.0.x.x","platforms":[]},{"source":"CNA","vendor":"VMware","product":"Cloud Foundation","version":"affected 5.x","platforms":[]},{"source":"CNA","vendor":"VMware","product":"vSphere Foundation","version":"affected 9.1.x.x","platforms":[]},{"source":"CNA","vendor":"VMware","product":"vSphere Foundation","version":"affected 9.0.x.x","platforms":[]},{"source":"CNA","vendor":"VMware","product":"ESX","version":"affected 9.1.x.x ESXi-9.1.0.0200-25557999 custom","platforms":[]},{"source":"CNA","vendor":"VMware","product":"ESX","version":"affected 9.0.x.x ESXi-9.0.2.0100-25595025 custom","platforms":[]},{"source":"CNA","vendor":"VMware","product":"ESX","version":"affected 8.0 ESXi80U3k-25595708 custom","platforms":[]},{"source":"CNA","vendor":"VMware","product":"Telco Cloud Platform","version":"affected 5.1.x","platforms":[]},{"source":"CNA","vendor":"VMware","product":"Telco Cloud Platform","version":"affected 5.0.x","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"47876","cve":"CVE-2026-47876","epss":"0.002810000","percentile":"0.204040000","score_date":"2026-07-31","updated_at":"2026-08-01 00:10:34"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-47876","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","timestamp":"2026-07-30T13:02:22.733448Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-07-30T13:02:29.161Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"defaultStatus":"unaffected","product":"Cloud Foundation","vendor":"VMware","versions":[{"status":"affected","version":"9.1.x.x"},{"status":"affected","version":"9.0.x.x"},{"status":"affected","version":"5.x"}]},{"defaultStatus":"unaffected","product":"vSphere Foundation","vendor":"VMware","versions":[{"status":"affected","version":"9.1.x.x"},{"status":"affected","version":"9.0.x.x"}]},{"defaultStatus":"unaffected","product":"ESX","vendor":"VMware","versions":[{"lessThan":"ESXi-9.1.0.0200-25557999","status":"affected","version":"9.1.x.x","versionType":"custom"},{"lessThan":"ESXi-9.0.2.0100-25595025","status":"affected","version":"9.0.x.x","versionType":"custom"},{"lessThan":"ESXi80U3k-25595708","status":"affected","version":"8.0","versionType":"custom"}]},{"defaultStatus":"unaffected","product":"Telco Cloud Platform","vendor":"VMware","versions":[{"status":"affected","version":"5.1.x"},{"status":"affected","version":"5.0.x"}]}],"datePublic":"2026-07-29T04:30:00.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"VMware ESX contains an out-of-bounds write vulnerability in the VMXNET3 virtual network adapter.&nbsp;<span>A malicious actor with local administrative privileges on a virtual machine with VMXNET3 virtual network adapter may exploit this issue to execute code on the host. Non VMXNET3 virtual adapters are not affected by this issue.</span><br><br>"}],"value":"VMware ESX contains an out-of-bounds write vulnerability in the VMXNET3 virtual network adapter. A malicious actor with local administrative privileges on a virtual machine with VMXNET3 virtual network adapter may exploit this issue to execute code on the host. Non VMXNET3 virtual adapters are not affected by this issue."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":9.3,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-787","description":"CWE-787 Out-of-bounds write","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-07-30T12:31:52.158Z","orgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","shortName":"vmware"},"references":[{"url":"https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/38017"}],"source":{"discovery":"UNKNOWN"},"title":"VMXNET3 out-of-bounds write vulnerability","x_generator":{"engine":"Vulnogram 1.0.4"}}},"cveMetadata":{"assignerOrgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","assignerShortName":"vmware","cveId":"CVE-2026-47876","datePublished":"2026-07-30T12:31:52.158Z","dateReserved":"2026-05-20T10:00:58.694Z","dateUpdated":"2026-07-30T13:02:29.161Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-30 13:16:51","lastModifiedDate":"2026-07-30 14:16:58","problem_types":["CWE-787","CWE-787 CWE-787 Out-of-bounds write"],"metrics":{"cvssMetricV31":[{"source":"security@vmware.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","baseScore":9.3,"baseSeverity":"CRITICAL","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.5,"impactScore":6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-07-30T13:02:22.733448Z","id":"CVE-2026-47876","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"47876","Ordinal":"1","Title":"VMXNET3 out-of-bounds write vulnerability","CVE":"CVE-2026-47876","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"47876","Ordinal":"1","NoteData":"VMware ESX contains an out-of-bounds write vulnerability in the VMXNET3 virtual network adapter. A malicious actor with local administrative privileges on a virtual machine with VMXNET3 virtual network adapter may exploit this issue to execute code on the host. Non VMXNET3 virtual adapters are not affected by this issue.","Type":"Description","Title":"VMXNET3 out-of-bounds write vulnerability"}]}}}