All vulnerabilities
CVE-2026-59346

VMware Workstation and Fusion VMXNET3 integer-overflow vulnerability

VMware VMware WorkstationContainers & cloud
Open in ThreatlineRecord JSON
CVSS
9.3Critical
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.26%Chance of exploitation activity in the next 30 days, higher than 16% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published7 Oct 2026Updated 7 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

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.

Affected versions:

  • VMware Workstation: 25H2, 26H1 (fixed in 26H1u1)
  • VMware Fusion: 25H2, 26H1 (fixed in 26H1u1)

Text from CVE List

Affected versions 4

  • VMware Workstationaffected: 25H2 through 26H1CVE List
  • VMware Workstationunaffected: 26H1u1CVE List
  • VMware Fusionaffected: 25H2 through 26H1CVE List
  • VMware Fusionunaffected: 26H1u1CVE List

References 1