CVE-2026-59346

VMware Workstation and Fusion VMXNET3 integer-overflow vulnerability

Published Oct 7, 2026 CVSS 3.1 · 9.3 Critical EPSS < 1% KEV · Not listed
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)

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Vmware
Vmware vmware Fusion
Vmware vmware Workstation
Vendors & Products Vmware
Vmware vmware Fusion
Vmware vmware Workstation
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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)
Title VMware Workstation and Fusion VMXNET3 integer-overflow vulnerability
Weaknesses CWE-190
References
Metrics cvssV3_1

{'score': 9.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
vmware
Published
Updated
Oct 7, 2026, 11:29 AM
Reserved
Jul 4, 2026, 6:14 PM
Status
Awaiting Analysis
Published
Oct 7, 2026, 6:16 AM
Modified
Oct 7, 2026, 3:58 PM