{"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": "2026-10-07T05:40:03.571Z"}, "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"}}}}

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