{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-59346","assignerOrgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","state":"PUBLISHED","assignerShortName":"vmware","dateReserved":"2026-07-04T18:14:34.673Z","datePublished":"2026-10-07T05:40:03.571Z","dateUpdated":"2026-10-07T11:29:55.791Z"},"containers":{"cna":{"providerMetadata":{"orgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","shortName":"vmware","dateUpdated":"2026-10-07T05:40:03.571Z"},"title":"VMware Workstation and Fusion VMXNET3 integer-overflow vulnerability","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-190","description":"CWE-190 Integer Overflow or Wraparound","type":"CWE"}]}],"impacts":[{"descriptions":[{"lang":"en","value":"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."}]}],"affected":[{"vendor":"VMware","product":"VMware Workstation","versions":[{"status":"affected","version":"25H2","versionType":"custom","lessThanOrEqual":"26H1"},{"status":"unaffected","version":"26H1u1","versionType":"custom"}],"defaultStatus":"unaffected"},{"vendor":"VMware","product":"VMware Fusion","versions":[{"status":"affected","version":"25H2","versionType":"custom","lessThanOrEqual":"26H1"},{"status":"unaffected","version":"26H1u1","versionType":"custom"}],"defaultStatus":"unaffected","platforms":["macOS"]}],"descriptions":[{"lang":"en","value":"VMware Workstation and Fusion contain an integer-overflow vulnerability. 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.\n\nAffected versions:\n- VMware Workstation: 25H2, 26H1 (fixed in 26H1u1)\n- VMware Fusion: 25H2, 26H1 (fixed in 26H1u1)","supportingMedia":[{"type":"text/html","base64":false,"value":"VMware Workstation and Fusion contain an integer-overflow vulnerability. 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.<br><br>Affected versions:<br><ul><li>VMware Workstation: 25H2, 26H1 (fixed in 26H1u1)</li><li>VMware Fusion: 25H2, 26H1 (fixed in 26H1u1)</li></ul>"}]}],"references":[{"url":"https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/security-advisories/0/38288"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"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"}}],"source":{"discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-07T11:29:45.838907Z","id":"CVE-2026-59346","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":"2026-10-07T11:29:55.791Z"}}]}}