{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-47876","assignerOrgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","state":"PUBLISHED","assignerShortName":"vmware","dateReserved":"2026-05-20T10:00:58.694Z","datePublished":"2026-07-30T12:31:52.158Z","dateUpdated":"2026-07-30T13:02:29.161Z"},"containers":{"cna":{"providerMetadata":{"orgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","shortName":"vmware","dateUpdated":"2026-07-30T12:31:52.158Z"},"title":"VMXNET3 out-of-bounds write vulnerability","datePublic":"2026-07-29T04:30:00.000Z","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-787","description":"CWE-787 Out-of-bounds write","type":"CWE"}]}],"affected":[{"vendor":"VMware","product":"Cloud Foundation","versions":[{"status":"affected","version":"9.1.x.x"},{"status":"affected","version":"9.0.x.x"},{"status":"affected","version":"5.x"}],"defaultStatus":"unaffected"},{"vendor":"VMware","product":"vSphere Foundation","versions":[{"status":"affected","version":"9.1.x.x"},{"status":"affected","version":"9.0.x.x"}],"defaultStatus":"unaffected"},{"vendor":"VMware","product":"ESX","versions":[{"status":"affected","version":"9.1.x.x","lessThan":"ESXi-9.1.0.0200-25557999","versionType":"custom"},{"status":"affected","version":"9.0.x.x","lessThan":"ESXi-9.0.2.0100-25595025","versionType":"custom"},{"status":"affected","version":"8.0","lessThan":"ESXi80U3k-25595708","versionType":"custom"}],"defaultStatus":"unaffected"},{"vendor":"VMware","product":"Telco Cloud Platform","versions":[{"status":"affected","version":"5.1.x"},{"status":"affected","version":"5.0.x"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","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.","supportingMedia":[{"type":"text/html","base64":false,"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>"}]}],"references":[{"url":"https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/38017"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseSeverity":"CRITICAL","baseScore":9.3,"vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"}}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.4"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-30T13:02:22.733448Z","id":"CVE-2026-47876","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-30T13:02:29.161Z"}}]}}