Improper certificate validation in vCenter Server
Priority LOW 33CWE-295Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-295.
Summary
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.
Why it matters now
EPSS 0.00645 51st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | vCenter Server | vCenter Server (6.7 before 6.7u3, 6.6 before 6.5u3k) | — | No fix listed | CNA |
- vCenter Server Vendor— Affected vCenter Server (6.7 before 6.7u3, 6.6 before 6.5u3k) Fixed in — No fix listed CNA
CPE configurations NVD · 30
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:vmware:cloud_foundation:*:*:*:*:*:*:*:* | 3.0 to before 3.9 | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.5:-:*:*:*:*:*:* | 6.5 | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.5:a:*:*:*:*:*:* | 6.5 a | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.5:b:*:*:*:*:*:* | 6.5 b | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.5:c:*:*:*:*:*:* | 6.5 c | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.5:d:*:*:*:*:*:* | 6.5 d | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.5:e:*:*:*:*:*:* | 6.5 e | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.5:f:*:*:*:*:*:* | 6.5 f | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.5:update1:*:*:*:*:*:* | 6.5 update1 | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.5:update1b:*:*:*:*:*:* | 6.5 update1b | Vulnerable | VMware |
- cpe:2.3:a:vmware:cloud_foundation:*:*:*:*:*:*:*:* Versions 3.0 to before 3.9 Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.5:-:*:*:*:*:*:* Versions 6.5 Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.5:a:*:*:*:*:*:* Versions 6.5 a Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.5:b:*:*:*:*:*:* Versions 6.5 b Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.5:c:*:*:*:*:*:* Versions 6.5 c Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.5:d:*:*:*:*:*:* Versions 6.5 d Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.5:e:*:*:*:*:*:* Versions 6.5 e Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.5:f:*:*:*:*:*:* Versions 6.5 f Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.5:update1:*:*:*:*:*:* Versions 6.5 update1 Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.5:update1b:*:*:*:*:*:* Versions 6.5 update1b Vulnerable ·VMware
Show 20 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:vmware:vcenter_server:6.5:update1c:*:*:*:*:*:* | 6.5 update1c | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.5:update1d:*:*:*:*:*:* | 6.5 update1d | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.5:update1e:*:*:*:*:*:* | 6.5 update1e | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.5:update1g:*:*:*:*:*:* | 6.5 update1g | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.5:update2:*:*:*:*:*:* | 6.5 update2 | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.5:update2b:*:*:*:*:*:* | 6.5 update2b | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.5:update2c:*:*:*:*:*:* | 6.5 update2c | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.5:update2d:*:*:*:*:*:* | 6.5 update2d | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.5:update2g:*:*:*:*:*:* | 6.5 update2g | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.5:update3:*:*:*:*:*:* | 6.5 update3 | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.5:update3d:*:*:*:*:*:* | 6.5 update3d | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.7:-:*:*:*:*:*:* | 6.7 | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.7:a:*:*:*:*:*:* | 6.7 a | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.7:b:*:*:*:*:*:* | 6.7 b | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.7:d:*:*:*:*:*:* | 6.7 d | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.7:update1:*:*:*:*:*:* | 6.7 update1 | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.7:update1b:*:*:*:*:*:* | 6.7 update1b | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.7:update2:*:*:*:*:*:* | 6.7 update2 | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.7:update2a:*:*:*:*:*:* | 6.7 update2a | Vulnerable | VMware |
| cpe:2.3:a:vmware:vcenter_server:6.7:update2c:*:*:*:*:*:* | 6.7 update2c | Vulnerable | VMware |
- cpe:2.3:a:vmware:vcenter_server:6.5:update1c:*:*:*:*:*:* Versions 6.5 update1c Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.5:update1d:*:*:*:*:*:* Versions 6.5 update1d Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.5:update1e:*:*:*:*:*:* Versions 6.5 update1e Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.5:update1g:*:*:*:*:*:* Versions 6.5 update1g Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.5:update2:*:*:*:*:*:* Versions 6.5 update2 Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.5:update2b:*:*:*:*:*:* Versions 6.5 update2b Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.5:update2c:*:*:*:*:*:* Versions 6.5 update2c Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.5:update2d:*:*:*:*:*:* Versions 6.5 update2d Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.5:update2g:*:*:*:*:*:* Versions 6.5 update2g Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.5:update3:*:*:*:*:*:* Versions 6.5 update3 Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.5:update3d:*:*:*:*:*:* Versions 6.5 update3d Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.7:-:*:*:*:*:*:* Versions 6.7 Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.7:a:*:*:*:*:*:* Versions 6.7 a Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.7:b:*:*:*:*:*:* Versions 6.7 b Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.7:d:*:*:*:*:*:* Versions 6.7 d Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.7:update1:*:*:*:*:*:* Versions 6.7 update1 Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.7:update1b:*:*:*:*:*:* Versions 6.7 update1b Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.7:update2:*:*:*:*:*:* Versions 6.7 update2 Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.7:update2a:*:*:*:*:*:* Versions 6.7 update2a Vulnerable ·VMware
- cpe:2.3:a:vmware:vcenter_server:6.7:update2c:*:*:*:*:*:* Versions 6.7 update2c Vulnerable ·VMware
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-3994
- 2026-10-03 Alias added: GHSA-cwr2-2v2q-jq6q
- 2026-10-20 EPSS moved to the 50th–90th percentile
References
More VMware Cloud Foundation vulnerabilities
- TI-2024-26040 Privilege escalation in VMware vCenter Server KEVCVSS 3.1CRITICAL 9.8
- TI-2024-26039 Heap-overflow in VMware vCenter Server KEVCVSS 3.1CRITICAL 9.8
- TI-2024-24610 Out-of-bounds write in VMware vCenter Server KEVCVSS 3.1CRITICAL 9.8
- TI-2022-07131 Code injection in VMware Workspace ONE Access and Identity Manager KEVCVSS 3.1CRITICAL 9.8
- TI-2021-05049 Path traversal in VMware vCenter Server, VMware Cloud Foundation KEVCVSS 3.1CRITICAL 9.8
- TI-2021-05029 Improper input validation in VMware vCenter Server and VMware Cloud Foundation KEVCVSS 3.1CRITICAL 9.8
Sources
- CVE-2020-3994 · CVE Program
- CVE-2020-3994 · NVD
- FIRST EPSS
- GHSA-cwr2-2v2q-jq6q · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences