How severe is CVE-2020-3993?

CVE-2020-3993 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2020-3993 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-3993?

CVE-2020-3993 primarily affects Vmware Cloud Foundation. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-3993?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-3993 published?

CVE-2020-3993 was published on 2020-10-20 and last updated on 2026-06-17.

CVE-2020-3993

CVE-2020-3993 is a medium-severity vulnerability in Vmware Cloud Foundation with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Vmware Cloud Foundation
Published: 2020-10-20
Last modified: 2026-06-17

Description

VMware NSX-T (3.x before 3.0.2, 2.5.x before 2.5.2.2.0) contains a security vulnerability that exists in the way it allows a KVM host to download and install packages from NSX manager. A malicious actor with MITM positioning may be able to exploit this issue to compromise the transport node.

Frequently asked questions

What is CVE-2020-3993?: VMware NSX-T (3.x before 3.0.2, 2.5.x before 2.5.2.2.0) contains a security vulnerability that exists in the way it allows a KVM host to download and install packages from NSX manager. A malicious actor with MITM positioning may be able to exploit this issue to compromise the transport node.
How severe is CVE-2020-3993?: CVE-2020-3993 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2020-3993 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-3993?: CVE-2020-3993 primarily affects Vmware Cloud Foundation. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-3993?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-3993 published?: CVE-2020-3993 was published on 2020-10-20 and last updated on 2026-06-17.

References

https://www.vmware.com/security/advisories/VMSA-2020-0023.html

Affected products (2)

cpe:2.3:a:broadcom:vmware_nsx-t_data_center:*:*:*:*:*:*:*:*
cpe:2.3:a:vmware:cloud_foundation:*:*:*:*:*:*:*:*

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