Integer overflow in VMware Fusion and VMware Workstation - CVE-2026-59346
Published: September 3, 2026
Vulnerability identifier: #VU146872
CSH Severity: Low
CVSS v4: 6.2 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H]
CVE-ID: CVE-2026-59346
CWE-ID: CWE-190
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute code on the host.
The vulnerability exists due to integer overflow in the VMXNET3 virtual network adapter when handling VMXNET3 operations on a virtual machine. A remote user with administrative privileges on the guest can execute arbitrary code on the host.
Exploitation requires a virtual machine with a VMXNET3 virtual network adapter.
Affected software
VMware Fusion
VMware Workstation
VMware Workstation
How to mitigate CVE-2026-59346
Install security update from vendor's website.
VMware Fusion - update to 26H1u1
VMware Workstation - update to 26H1u1
VMware Workstation - update to 26H1u1