{"schemaVersion":3,"id":"CVE-2026-59346","aliases":[],"status":"published","duplicateOf":null,"title":null,"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)","dates":{"published":"2026-10-07T05:40:03.571Z","modified":"2026-10-07T11:29:55.791Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9.3,"severity":"critical","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","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","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","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","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00258,"percentile":0.16381,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-07T00:00:00.000Z","score":0.00258,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00258,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00258,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00258,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00258,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00258,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00258,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00258,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00258,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00258,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00258,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00258,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00258,"percentile":0.16381}],"last30":[{"date":"2026-10-07T00:00:00.000Z","score":0.00258,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00258,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00258,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00258,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00258,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00258,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00258,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00258,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00258,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00258,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00258,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00258,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00258,"percentile":0.16381}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-190","name":"Integer Overflow or Wraparound","description":"The product performs a calculation that can\n         produce an integer overflow or wraparound when the logic\n         assumes that the resulting value will always be larger than\n         the original value. This occurs when an integer value is\n         incremented to a value that is too large to store in the\n         associated representation. When this occurs, the value may\n         become a very small or negative number.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/190.html"}],"affected":[{"vendor":"vmware","product":"vmware fusion","name":"VMware Fusion","label":"vmware fusion","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 25H2, ≤ 26H1","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 25H2, ≤ 26H1","eol":null,"hubHref":"/vendor/vmware/vmware_fusion"},{"vendor":"vmware","product":"vmware_workstation","name":"vmware workstation","label":"vmware_workstation","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 25H2, ≤ 26H1","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 25H2, ≤ 26H1","eol":null,"hubHref":"/vendor/vmware/vmware_workstation"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/security-advisories/0/38288","label":"support.broadcom.com/web/…","hostname":"support.broadcom.com","tags":[]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-07T05:40:03.571Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-07T11:29:55.791Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T03:11:18.899Z","stale":false,"partial":false}}