Vulnerability Intelligence Report
VMware Workstation and Fusion HGFS stack-based buffer-overflow vulnerability
CVE-2026-59347
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)
No Active Exploit Signals
CVSS Base Score
8.1
HIGH
Exploitability:1.5
Impact Score:6.1
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-121 ↗CWE-121 Stack-based Buffer Overflow
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| VMware | VMware Workstation | 25H2 <= 26H1 (affected), 26H1u1 (unaffected) |
| VMware | VMware Fusion | 25H2 <= 26H1 (affected), 26H1u1 (unaffected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | VMware by Broadcom · Vendor · USA |
| Reserved | 2026-07-04T18:14:34 |
| Published | 2026-10-07T05:40:05 |
| Last Updated | 2026-10-07T11:29:34 |
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