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CVE-2020-3994

HIGH
7.4
CVSS Score
Published: October 20, 2020 at 04:14 PM UTC
Updated: June 17, 2026 at 03:19 AM UTC
2 products affected across 1 vendorCloud FoundationvCenter Server

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Severity
HIGH7.4
Exploit prediction
EPSS 0.6%

Description

VMware vCenter Server (6.7 before 6.7u3, 6.6 before 6.5u3k) contains a session hijack vulnerability in the vCenter Server Appliance Management Interface update function due to a lack of certificate validation. A malicious actor with network positioning between vCenter Server and an update repository may be able to perform a session hijack when the vCenter Server Appliance Management Interface is used to download vCenter updates.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Cloud Foundation· VMware
95%
3.0 ≤ v < 3.9
Affected range stops below 3.9, so it looks safe — our inference, not a vendor statement
vCenter Server· VMware
95%
v < 6.7u36.56.5 a6.5 b6.5 c6.5 d6.5 e6.5 f6.5 update16.5 update1b6.5 update1c6.5 update1d6.5 update1e6.5 update1g6.5 update26.5 update2b6.5 update2c6.5 update2d6.5 update2g6.5 update36.5 update3d6.76.7 a6.7 b6.7 d6.7 update16.7 update1b6.7 update26.7 update2a6.7 update2c
Affected range stops below 6.7u3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://www.vmware.com/security/advisories/VMSA-2020-0023.html

CVSS

7.4HIGH[email protected]
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-295

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