CVE-2020-3994

7.4 highEPSS 0.6%

High (7.4) in vmware. EPSS 0.6% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.4 high

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 50% of CVEs (scores of 2026-10-31)
CWE: CWE-295
Published: 2020-10-20
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

vmware:cloud_foundation
vmware:vcenter_server

References

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

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