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TI-2026-68951 Aliases CVE-2026-59347GHSA-54rf-87fx-f97x

VMware Workstation and Fusion HGFS stack-based buffer overflow

Priority LOW 37CWE-121Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

VMware Workstation and Fusion 25H2 through 26H1 contain a stack-based buffer overflow in HGFS (CWE-121). A malicious actor with local administrative privileges on a virtual machine can exploit it to execute code as the virtual machine's VMX process on the host. CVSS 3.1 gives a base score of 8.1 (HIGH), CISA has not added the issue to KEV, and CISA's SSVC rates exploitation as none and automatable as no.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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)

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00234 14th percentileScored 2026-11-07
Fix Fixed VMware Workstation (VMware): 26H1u1VMware Fusion (VMware): 26H1u1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
VMwareVMware Workstation25H2 – 26H126H1u1Patch availableCNA
VMwareVMware Fusion25H2 – 26H126H1u1Patch availableCNA
  • VMware Workstation VendorVMware Affected 25H2 – 26H1 Fixed in 26H1u1 Patch available CNA
  • VMware Fusion VendorVMware Affected 25H2 – 26H1 Fixed in 26H1u1 Patch available CNA

Remediation

Update VMware Workstation and VMware Fusion to 26H1u1, which fixes the issue for both products.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA VMware Workstation (VMware) Fixed in 26H1u1
  • Fix · CNA VMware Fusion (VMware) Fixed in 26H1u1

Timeline

  1. 2026-10-07 Threatist record created from CVE-2026-59347
  2. 2026-10-07 Alias added: GHSA-54rf-87fx-f97x
  3. 2026-10-07 CISA SSVC decision points changed
  4. 2026-10-07 Priority changed: MEDIUM → LOW

References

Other 1

  • TI-2026-42442 vCenter directory-traversal vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-26040 Privilege escalation in VMware vCenter Server KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-26039 Heap-overflow in VMware vCenter Server KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-24610 Out-of-bounds write in VMware vCenter Server KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-16914 VMware vCenter Server Out-of-Bounds Write Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-07303 Command injection in Aria Operations for Networks KEVCVSS 3.1CRITICAL 9.8
See all 1181 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences