CVE-2017-4933

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Summary

CVECVE-2017-4933
StatePUBLISHED
Assignervmware
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-12-20 15:29:00 UTC
Updated2025-04-20 01:37:25 UTC
DescriptionVMware 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.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.070780000 probability, percentile 0.915940000 (date 2026-05-18)

Problem Types: CWE-787 | Heap overflow via authenticated VNC session

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary6AV:N/AC:M/Au:S/C:P/I:P/A:P

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
Single
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:N/AC:M/Au:S/C:P/I:P/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Apple Mac Os X - All All All
Operating System Vmware Esxi 6.5 - All All
Operating System Vmware Esxi 6.5 650-201701001 All All
Operating System Vmware Esxi 6.5 650-201703001 All All
Operating System Vmware Esxi 6.5 650-201703002 All All
Operating System Vmware Esxi 6.5 650-201704001 All All
Operating System Vmware Esxi 6.5 650-201707101 All All
Operating System Vmware Esxi 6.5 650-201707102 All All
Operating System Vmware Esxi 6.5 650-201707103 All All
Operating System Vmware Esxi 6.5 650-201707201 All All
Operating System Vmware Esxi 6.5 650-201707202 All All
Operating System Vmware Esxi 6.5 650-201707203 All All
Operating System Vmware Esxi 6.5 650-201707204 All All
Operating System Vmware Esxi 6.5 650-201707205 All All
Operating System Vmware Esxi 6.5 650-201707206 All All
Operating System Vmware Esxi 6.5 650-201707207 All All
Operating System Vmware Esxi 6.5 650-201707208 All All
Operating System Vmware Esxi 6.5 650-201707209 All All
Operating System Vmware Esxi 6.5 650-201707210 All All
Operating System Vmware Esxi 6.5 650-201707211 All All
Operating System Vmware Esxi 6.5 650-201707212 All All
Operating System Vmware Esxi 6.5 650-201707213 All All
Operating System Vmware Esxi 6.5 650-201707214 All All
Operating System Vmware Esxi 6.5 650-201707215 All All
Operating System Vmware Esxi 6.5 650-201707216 All All
Operating System Vmware Esxi 6.5 650-201707217 All All
Operating System Vmware Esxi 6.5 650-201707218 All All
Operating System Vmware Esxi 6.5 650-201707219 All All
Operating System Vmware Esxi 6.5 650-201707220 All All
Operating System Vmware Esxi 6.5 650-201707221 All All
Operating System Vmware Esxi 6.5 650-201710001 All All
Application Vmware Fusion All All All All
Application Vmware Workstation Pro All All All All
Application Vmware Workstation Pro 14.0 All All All
Application Vmware Workstation Pro 14.1.0 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA VMware ESXi affected 6.5 before ESXi650-201710401-BG Not specified
CNA VMware Workstation affected 12.x before 12.5.8 Not specified
CNA VMware Fusion affected 8.x before 8.5.9 Not specified

References

ReferenceSourceLinkTags
VMSA-2017-0021 af854a3a-2127-422b-91ae-364da2661108 www.vmware.com Issue Tracking, Vendor Advisory
VMware Workstation and Fusion Buffer Overflows in Processing VNC Packets Let Remote Authenticated Users Execute Arbitrary Code - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com Third Party Advisory, VDB Entry
VMware ESXi Buffer Overflows in Processing VNC Packets Let Remote Authenticated Users Execute Arbitrary Code and an Input Validation Flaw in the Host Client Lets Remote Users Conduct Cross-Site Scripting Attacks - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com Third Party Advisory, VDB Entry
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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