Critical severity9.3NVD Advisory· Published Oct 7, 2026· Updated Oct 7, 2026

CVE-2026-59346

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)

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

VMware/Workstationllm-fuzzy
Range: 25H2, 26H1 (fixed in 26H1u1)
VMware/Fusionllm-fuzzy
Range: 25H2, 26H1 (fixed in 26H1u1)
Broadcom Corporation/VMware Workstationllm-fuzzy
Range: 25H2, 26H1 (fixed in 26H1u1)

Patches

Vulnerability mechanics

References

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

News mentions

PoC Released for Critical VMware VMXNET3 Flaw Enabling Guest-to-Host Code Execution
Cyber Security News · Oct 8, 2026

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