CVE-2026-59346

VMware Workstation and Fusion VMXNET3 integer-overflow vulnerability

State: Published
Severity: 9.3 Critical
Published: Oct 7, 2026
Updated: Oct 7, 2026
Reserved: Jul 4, 2026

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)

Scores

CVSS	Score	Vector	Source
3.1	9.3 Critical	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H	vmware

Weaknesses

CWE-190 Integer Overflow or Wraparound

Affected Products

Product	Versions
VMware WorkstationVMware	25H2 through 26H1Affected 26H1u1Not affected
VMware FusionVMware	25H2 through 26H1Affected 26H1u1Not affected

References

https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/security-advisories/0/38288

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