CVE-2026-59346
VMware Workstation and Fusion VMXNET3 integer-overflow vulnerability
- Published
- Oct 7, 2026
- Updated
- Oct 7, 2026
- Assigning CNA
- vmware
- Evidence observed
- Sep 16, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HLow · next 30 days
- Percentile
- 16.3%
- Model date
- Oct 15, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
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)
Sources
PoC for CVE-2026-59346 - 32-bit integer overflow in VMware's VMXNET3 TSO segmentation path, guest-to-host crash.
Responsible use
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