Integer Overflow Vulnerability in VMware Workstation and Fusion Products
CVE-2026-59346

9.3CRITICAL

Key Information:

Vendor

Vmware
Status
Vmware Workstation
Vmware Fusion
Vendor
CVE Published:
7 October 2026

What is CVE-2026-59346?

VMware Workstation and Fusion have a vulnerability that allows a malicious actor with local administrative privileges on a virtual machine using the VMXNET3 virtual network adapter to exploit an integer overflow issue. This flaw may permit the execution of arbitrary code on the host system, posing a significant security risk. Users are advised to update their software to the latest versions to mitigate this vulnerability.

Affected Version(s)

VMware Fusion macOS 25H2 <= 26H1

VMware Workstation 25H2 <= 26H1

VMware Fusion macOS 26H1u1

References

https://support.broadcom.com/web/ecx/support-content-noti...

CVSS V3.1

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.