VulnerabilityModified

CVE-2017-4941

HIGH 8.8EPSS 3.16%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (3.16%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

VMware ESXi (6.0 before ESXi600-201711101-SG, 5.5 ESXi550-201709101-SG), 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 stack overflow via a specific set of VNC packets. 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 3.1: 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 3.16% probability · 88th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-119
Affected: vmware/fusion · vmware/workstation · vmware/esxi
Source: security@vmware.com

EPSS trend

EPSS 3.2% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

http://www.securitytracker.com/id/1040024Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040025Third Party Advisory, VDB Entry
https://www.vmware.com/security/advisories/VMSA-2017-0021.htmlIssue Tracking, Patch, Vendor Advisory
http://www.securitytracker.com/id/1040024Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040025Third Party Advisory, VDB Entry
https://www.vmware.com/security/advisories/VMSA-2017-0021.htmlIssue Tracking, Patch, Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.