CVE-2018-6966

VMware ESXi (6.7 before ESXi670-201806401-BG), Workstation (14.x before 14.1.2), and Fusion (10.x before 10.1.2) contain an out-of-bounds read vulnerability in the shader translator. Successful exploitation of this issue may lead to information disclosure or may allow attackers with normal user privileges to crash their VMs, a different vulnerability than CVE-2018-6965 and CVE-2018-6967.

Published: 2018-07-09 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-6966 is rated Moderate Risk (62.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.26%). EPSS rose +1.51% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2018-6966

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.75% 2.26% +1.51%
2 2026-06-12 0.39% 0.75% +0.36%
3 2025-11-21 — 0.39% —

Full EPSS history (13 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-6966

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.1 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.2 [email protected]
5.5 2.0 MEDIUM
AV:N/AC:L/Au:S/C:P/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 4.9 [email protected]

Weakness enumeration for CVE-2018-6966

Affected software / configurations for CVE-2018-6966

Vendor Product Version Raw CPE
vmware fusion >= 10.0, < 10.1.2 cpe:2.3:a:vmware:fusion:*:*:*:*:*:*:*:*
vmware workstation >= 14.0, < 14.1.2 cpe:2.3:a:vmware:workstation:*:*:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:-:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201806001:*:*:*:*:*:*

References for CVE-2018-6966

cvelogic Threat Intelligence