CVE-2018-6957

VMware Workstation (14.x before 14.1.1, 12.x) and Fusion (10.x before 10.1.1 and 8.x) contain a denial-of-service vulnerability which can be triggered by opening a large number of VNC sessions. Note: In order for exploitation to be possible on Workstation and Fusion, VNC must be manually enabled.

Published: 2018-03-15 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-6957 is rated Moderate Risk (41.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.38%). 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-2018-6957

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 2025-06-12 0.52% 0.38% -0.14%
2 2025-03-30 0.58% 0.52% -0.06%
3 2025-03-29 — 0.58% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-6957

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.0 MEDIUM
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/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:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
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:N)
Doesn’t really leak secrets in a meaningful 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.
 1.6 3.6 [email protected]
3.5 2.0 LOW
AV:N/AC:M/Au:S/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 6.8 2.9 [email protected]

Weakness enumeration for CVE-2018-6957

Affected software / configurations for CVE-2018-6957

Vendor Product Version Raw CPE
vmware workstation_pro >= 14.0, < 14.1.1 cpe:2.3:a:vmware:workstation_pro:*:*:*:*:*:*:*:*
vmware workstation_pro 12.0 cpe:2.3:a:vmware:workstation_pro:12.0:*:*:*:*:*:*:*
vmware workstation_pro 12.1 cpe:2.3:a:vmware:workstation_pro:12.1:*:*:*:*:*:*:*
vmware workstation_pro 12.01 cpe:2.3:a:vmware:workstation_pro:12.01:*:*:*:*:*:*:*
vmware workstation_pro 12.1.1 cpe:2.3:a:vmware:workstation_pro:12.1.1:*:*:*:*:*:*:*
vmware workstation_pro 12.5 cpe:2.3:a:vmware:workstation_pro:12.5:*:*:*:*:*:*:*
vmware workstation_pro 12.5.1 cpe:2.3:a:vmware:workstation_pro:12.5.1:*:*:*:*:*:*:*
vmware workstation_pro 12.5.2 cpe:2.3:a:vmware:workstation_pro:12.5.2:*:*:*:*:*:*:*
vmware workstation_pro 12.5.3 cpe:2.3:a:vmware:workstation_pro:12.5.3:*:*:*:*:*:*:*
vmware workstation_pro 12.5.4 cpe:2.3:a:vmware:workstation_pro:12.5.4:*:*:*:*:*:*:*
vmware workstation_pro 12.5.5 cpe:2.3:a:vmware:workstation_pro:12.5.5:*:*:*:*:*:*:*
vmware workstation_pro 12.5.6 cpe:2.3:a:vmware:workstation_pro:12.5.6:*:*:*:*:*:*:*
vmware workstation_pro 12.5.7 cpe:2.3:a:vmware:workstation_pro:12.5.7:*:*:*:*:*:*:*
vmware workstation_player >= 14.0, < 14.1.1 cpe:2.3:a:vmware:workstation_player:*:*:*:*:*:*:*:*
vmware workstation_player 12.0 cpe:2.3:a:vmware:workstation_player:12.0:*:*:*:*:*:*:*
vmware workstation_player 12.0.1 cpe:2.3:a:vmware:workstation_player:12.0.1:*:*:*:*:*:*:*
vmware workstation_player 12.1 cpe:2.3:a:vmware:workstation_player:12.1:*:*:*:*:*:*:*
vmware workstation_player 12.1.1 cpe:2.3:a:vmware:workstation_player:12.1.1:*:*:*:*:*:*:*
vmware workstation_player 12.5 cpe:2.3:a:vmware:workstation_player:12.5:*:*:*:*:*:*:*
vmware workstation_player 12.5.1 cpe:2.3:a:vmware:workstation_player:12.5.1:*:*:*:*:*:*:*
vmware workstation_player 12.5.2 cpe:2.3:a:vmware:workstation_player:12.5.2:*:*:*:*:*:*:*
vmware workstation_player 12.5.3 cpe:2.3:a:vmware:workstation_player:12.5.3:*:*:*:*:*:*:*
vmware workstation_player 12.5.4 cpe:2.3:a:vmware:workstation_player:12.5.4:*:*:*:*:*:*:*
vmware workstation_player 12.5.5 cpe:2.3:a:vmware:workstation_player:12.5.5:*:*:*:*:*:*:*
vmware workstation_player 12.5.6 cpe:2.3:a:vmware:workstation_player:12.5.6:*:*:*:*:*:*:*
vmware workstation_player 12.5.7 cpe:2.3:a:vmware:workstation_player:12.5.7:*:*:*:*:*:*:*
vmware fusion 8.0 cpe:2.3:a:vmware:fusion:8.0:*:*:*:*:*:*:*
vmware fusion 8.0.1 cpe:2.3:a:vmware:fusion:8.0.1:*:*:*:*:*:*:*
vmware fusion 8.0.2 cpe:2.3:a:vmware:fusion:8.0.2:*:*:*:*:*:*:*
vmware fusion 8.1 cpe:2.3:a:vmware:fusion:8.1:*:*:*:*:*:*:*
vmware fusion 8.1.1 cpe:2.3:a:vmware:fusion:8.1.1:*:*:*:*:*:*:*
vmware fusion 8.5 cpe:2.3:a:vmware:fusion:8.5:*:*:*:*:*:*:*
vmware fusion 8.5.1 cpe:2.3:a:vmware:fusion:8.5.1:*:*:*:*:*:*:*
vmware fusion 8.5.2 cpe:2.3:a:vmware:fusion:8.5.2:*:*:*:*:*:*:*
vmware fusion 8.5.3 cpe:2.3:a:vmware:fusion:8.5.3:*:*:*:*:*:*:*
vmware fusion 8.5.4 cpe:2.3:a:vmware:fusion:8.5.4:*:*:*:*:*:*:*
vmware fusion 8.5.5 cpe:2.3:a:vmware:fusion:8.5.5:*:*:*:*:*:*:*
vmware fusion 8.5.6 cpe:2.3:a:vmware:fusion:8.5.6:*:*:*:*:*:*:*
vmware fusion 8.5.7 cpe:2.3:a:vmware:fusion:8.5.7:*:*:*:*:*:*:*
vmware fusion 8.5.8 cpe:2.3:a:vmware:fusion:8.5.8:*:*:*:*:*:*:*
vmware fusion >= 10.0, < 10.1.1 cpe:2.3:a:vmware:fusion:*:*:*:*:*:*:*:*

References for CVE-2018-6957

cvelogic Threat Intelligence