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Vulnerability · Published Oct 7, 2026 · Assigned by vmware

CVE-2026-59347VMware Workstation and Fusion HGFS stack-based buffer-overflow vulnerability

High 8.1

In plain English

A high-severity stack buffer overflow in VMware Fusion from VMware. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).

Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.2%top 85.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

VMware Workstation and Fusion contain a stack-based buffer-overflow vulnerability in HGFS. A malicious actor with local administrative privileges on a virtual machine may exploit this issue to execute code as the virtual machine's VMX process running on the host. Affected versions: - VMware Workstation: 25H2, 26H1 (fixed in 26H1u1) - VMware Fusion: 25H2, 26H1 (fixed in 26H1u1)

Affected products (as reported)

VendorProductVersions
VMware VMware Workstation 25H2 – through 26H1
VMware VMware Fusion 25H2 – through 26H1

Weakness: CWE-121 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

References