High 8.8Published Dec 20, 2017

CVE-2017-4933VMware ESXi (6.5 before ESXi650-201710401-BG), Workstation (12.x before 12.5.8), and Fusion (8.x before 8.5.9) contain a vulnerability that could allow an authenticated VNC session to cause a heap ov…

Updated under an hour ago (Nov 2, 2026, 12:10 AM ET)

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It affects vmware workstation_pro and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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VMware ESXi (6.5 before ESXi650-201710401-BG), Workstation (12.x before 12.5.8), and Fusion (8.x before 8.5.9) contain a vulnerability that could allow an authenticated VNC session to cause a heap overflow via a specific set of VNC packets resulting in heap corruption. Successful exploitation of this issue could result in remote code execution in a virtual machine via the authenticated VNC session. Note: In order for exploitation to be possible in ESXi, VNC must be manually enabled in a virtual machine's .vmx configuration file. In addition, ESXi must be configured to allow VNC traffic through the built-in firewall.

CVSS: 8.8 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-787
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

vmware workstation_pro vmware:workstation_pro	from 12.0.0 before 12.5.8; 14.0; 14.1.0	NVD
vmware esxi vmware:esxi	6.5; 6.5; 6.5; 6.5; 6.5; 6.5; 6.5; 6.5; and 22 more ranges	NVD
vmware fusion vmware:fusion	from 8.0.0 before 8.5.9	NVD

References

References

http://www.securitytracker.com/id/1040024	third-party-advisory, vdb-entry
http://www.securitytracker.com/id/1040025	third-party-advisory, vdb-entry
https://www.vmware.com/security/advisories/VMSA-2017-0021.html	issue-tracking, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.