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)
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| VMware | VMware Workstation | 25H2 – ≤ 26H1 | 26H1u1 |
| VMware | VMware Fusion | 25H2 – ≤ 26H1 | 26H1u1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
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0xCyberstan/CVE-2026-59346-POC ★ 13 · Sep 15, 2026
PoC for CVE-2026-59346 - 32-bit integer overflow in VMware's VMXNET3 TSO segmentation path, guest-to-host crash.
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- WID-SEC-2026-3169 VMware Fusion und Workstation: Mehrere Schwachstellen ermöglichen Codeausführung BSI CERT-Bund (WID) · Oct 7, 2026