CVE-2026-59346

VMware Workstation and Fusion VMXNET3 integer-overflow vulnerability

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)

Affected

VMware · VMware Workstation · VMware Fusion

CVSS v3.1 VMWARE

9.3 CRITICALCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS

0.26% chance of exploitation in the next 30 days, 16th percentile

Published

2026-10-07

Proof-of-concept exploits (1)

• 0xCyberstan/CVE-2026-59346-POC13★ · 2026-09-15

References

• CVE Record
• NVD entry

Related

• CVE-2025-64459
• CVE-2026-31694
• CVE-2026-42533
• CVE-2026-46215
• CVE-2026-53360