CVE-2018-6981

Name: CVE-2018-6981
Creator: NVD / NIST
Published: 2018-12-04T14:29:00.543+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.27%

Last modified Jun 17, 2026

CVE-2018-6981 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. VMware ESXi 6.7 without ESXi670-201811401-BG and VMware ESXi 6.5 without ESXi650-201811301-BG, VMware ESXi 6.0 without ESXi600-201811401-BG, VMware Workstation 15, VMware Workstation 14.1.3 or below, VMware Fusion 11, VMware Fusion 10.1.3 or below contain uninitialized stack memory usage in the vmxnet3 virtual network adapter which may allow a guest to execute code on the host.. EPSS estimates a 1.27% chance of exploitation in the next 30 days.

Description

VMware ESXi 6.7 without ESXi670-201811401-BG and VMware ESXi 6.5 without ESXi650-201811301-BG, VMware ESXi 6.0 without ESXi600-201811401-BG, VMware Workstation 15, VMware Workstation 14.1.3 or below, VMware Fusion 11, VMware Fusion 10.1.3 or below contain uninitialized stack memory usage in the vmxnet3 virtual network adapter which may allow a guest to execute code on the host.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.27%

66.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-908

Affected Software

Vendor	Product	Versions
Vmware	Workstation	>= 14.0.0, < 14.1.4
Vmware	Workstation	15.0.0
Vmware	Fusion	>= 10.0.0, < 10.1.4
Vmware	Fusion	11.0.0
Vmware	Esxi	6.0
Vmware	Esxi	6.5
Vmware	Esxi	6.7

References

http://www.securityfocus.com/bid/105881Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1042054Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1042055Third Party Advisory, VDB Entry
https://www.vmware.com/security/advisories/VMSA-2018-0027.htmlVendor Advisory
http://www.securityfocus.com/bid/105881Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1042054Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1042055Third Party Advisory, VDB Entry
https://www.vmware.com/security/advisories/VMSA-2018-0027.htmlVendor Advisory

Timeline

Published: Dec 4, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-6981?

How severe is CVE-2018-6981?

CVE-2018-6981 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.27% probability of exploitation in the next 30 days.

How do I fix CVE-2018-6981?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-6981?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST