{"id":"CVE-2026-59346","state":"PUBLISHED","title":"VMware Workstation and Fusion VMXNET3 integer-overflow vulnerability","description":"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)","publishedAt":"2026-10-07T05:40:03.571Z","updatedAt":"2026-10-07T11:29:55.791Z","severity":{"score":9.3,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","source":"vmware"},"assigner":"vmware","products":["VMware VMware Workstation","VMware VMware Fusion"],"affected":[{"vendor":"VMware","product":"VMware Workstation","defaultStatus":"unaffected","versions":[{"version":"25H2","status":"affected","lessThanOrEqual":"26H1","versionType":"custom"},{"version":"26H1u1","status":"unaffected","versionType":"custom"}]},{"vendor":"VMware","product":"VMware Fusion","defaultStatus":"unaffected","versions":[{"version":"25H2","status":"affected","lessThanOrEqual":"26H1","versionType":"custom"},{"version":"26H1u1","status":"unaffected","versionType":"custom"}],"platforms":["macOS"]}],"references":["https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/security-advisories/0/38288"],"weaknesses":["CWE-190"],"ingestedAt":"2026-10-29T20:12:32.778Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/59xxx/CVE-2026-59346.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-59346","state":"PUBLISHED","datePublished":"2026-10-07T05:40:03.571Z","dateUpdated":"2026-10-07T11:29:55.791Z","assignerShortName":"vmware","assignerOrgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","dateReserved":"2026-07-04T18:14:34.673Z"},"containers":{"cna":{"title":"VMware Workstation and Fusion VMXNET3 integer-overflow vulnerability","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)"}],"affected":[{"vendor":"VMware","product":"VMware Workstation","defaultStatus":"unaffected","versions":[{"version":"25H2","status":"affected","lessThanOrEqual":"26H1","versionType":"custom"},{"version":"26H1u1","status":"unaffected","versionType":"custom"}]},{"vendor":"VMware","product":"VMware Fusion","defaultStatus":"unaffected","versions":[{"version":"25H2","status":"affected","lessThanOrEqual":"26H1","versionType":"custom"},{"version":"26H1u1","status":"unaffected","versionType":"custom"}],"platforms":["macOS"]}],"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-190","lang":"en","description":"CWE-190 Integer Overflow or Wraparound","type":"CWE"}]}],"providerMetadata":{"shortName":"vmware","orgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","dateUpdated":"2026-10-07T05:40:03.571Z"},"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."}]}],"source":{"discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","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"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-07T11:29:55.791Z"}}]}}}