CVE-2020-3995

In VMware ESXi (6.7 before ESXi670-201908101-SG, 6.5 before ESXi650-202007101-SG), Workstation (15.x before 15.1.0), Fusion (11.x before 11.1.0), the VMCI host drivers used by VMware hypervisors contain a memory leak vulnerability. A malicious actor with access to a virtual machine may be able to trigger a memory leak issue resulting in memory resource exhaustion on the hypervisor if the attack is sustained for extended periods of time.

Published: 2020-10-20 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-3995 is rated Moderate Risk (43.4/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.10%). 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-2020-3995

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 0.31% 1.10% +0.78%
2 2026-02-11 0.37% 0.31% -0.05%
3 2025-11-21 — 0.37% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-3995

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/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-2020-3995

Affected software / configurations for CVE-2020-3995

Vendor Product Version Raw CPE
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:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201807001:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201808001:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810001:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810101:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810102:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810103:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810201:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810202:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810203:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810204:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810205:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810206:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810207:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810208:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810209:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810210:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810211:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810212:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810213:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810214:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810215:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810216:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810217:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810218:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810219:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810220:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810221:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810222:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810223:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810224:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810225:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810226:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810227:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810228:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810229:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810230:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810231:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810232:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810233:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201810234:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201811001:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201901001:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201901401:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201901402:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201901403:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201903001:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904001:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904201:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904201-ug:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904202:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904202-ug:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904203:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904203-ug:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904204:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904204-ug:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904205:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904205-ug:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904206:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904206-ug:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904207:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904207-ug:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904208:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904208-ug:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904209:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904209-ug:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904210:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904210-ug:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904211:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904211-ug:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904212:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904212-ug:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904213:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904213-ug:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904214:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904214-ug:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904215:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904215-ug:*:*:*:*:*:*
vmware esxi 6.7 cpe:2.3:o:vmware:esxi:6.7:670-201904216:*:*:*:*:*:*

References for CVE-2020-3995

cvelogic Threat Intelligence