CVE-2026-59347 VMware Workstation and Fusion HGFS stack-based buffer-overflow vulnerability
A local attacker with admin privileges in a guest VM can execute code on the host via a stack-based buffer overflow in HGFS.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-59347?
CVE-2026-59347 is a high-severity memory corruption vulnerability in VMware Fusion, published on 7 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
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)
Weakness: CWE-121
Which versions are affected by CVE-2026-59347?
How do I fix CVE-2026-59347?
No fix has been published for CVE-2026-59347 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-59347 being exploited?
There is no known exploitation of CVE-2026-59347 in the wild and no public exploit code.
Sources
Also known as GHSA-54rf-87fx-f97x.