The XHCI controller in VMware ESXi 6.5 without patch ESXi650-201703410-SG, 6.0 U3 without patch ESXi600-201703401-SG, 6.0 U2 without patch ESXi600-201703403-SG, 6.0 U1 without patch ESXi600-201703402-SG, and 5.5 without patch ESXi550-201703401-SG; Workstation Pro / Player 12.x prior to 12.5.5; and Fusion Pro / Fusion 8.x prior to 8.5.6 has uninitialized memory usage. This issue may allow a guest to execute code on the host. The issue is reduced to a Denial of Service of the guest on ESXi 5.5.
Conclusion & alert: CVE-2017-4904 is rated Moderate Risk (56.4/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.40%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
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 | 2026-03-04 | 0.23% | 0.40% | +0.17% |
| 2 | 2026-03-01 | 0.40% | 0.23% | -0.17% |
| 3 | 2026-02-28 | — | 0.40% | — |
Full EPSS history (10 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.8 | 3.1 | HIGH |
|
2.0 | 6.0 | [email protected] |
| 7.2 | 2.0 | HIGH |
|
3.9 | 10.0 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| vmware | fusion | >= 8.0.0, < 8.5.6 | cpe:2.3:a:vmware:fusion:*:*:*:*:*:*:*:* |
| vmware | fusion_pro | >= 8.0.0, < 8.5.6 | cpe:2.3:a:vmware:fusion_pro:*:*:*:*:*:*:*:* |
| vmware | workstation_player | >= 12.0.0, < 12.5.5 | cpe:2.3:a:vmware:workstation_player:*:*:*:*:*:*:*:* |
| vmware | workstation_pro | >= 12.0.0, < 12.5.5 | cpe:2.3:a:vmware:workstation_pro:*:*:*:*:*:*:*:* |
| vmware | esxi | 5.5 | cpe:2.3:o:vmware:esxi:5.5:-:*:*:*:*:*:* |
| vmware | esxi | 5.5 | cpe:2.3:o:vmware:esxi:5.5:1:*:*:*:*:*:* |
| vmware | esxi | 5.5 | cpe:2.3:o:vmware:esxi:5.5:2:*:*:*:*:*:* |
| vmware | esxi | 5.5 | cpe:2.3:o:vmware:esxi:5.5:3a:*:*:*:*:*:* |
| vmware | esxi | 5.5 | cpe:2.3:o:vmware:esxi:5.5:3b:*:*:*:*:*:* |
| vmware | esxi | 6.0 | cpe:2.3:o:vmware:esxi:6.0:-:*:*:*:*:*:* |
| vmware | esxi | 6.0 | cpe:2.3:o:vmware:esxi:6.0:1:*:*:*:*:*:* |
| vmware | esxi | 6.0 | cpe:2.3:o:vmware:esxi:6.0:1a:*:*:*:*:*:* |
| vmware | esxi | 6.0 | cpe:2.3:o:vmware:esxi:6.0:1b:*:*:*:*:*:* |
| vmware | esxi | 6.0 | cpe:2.3:o:vmware:esxi:6.0:2:*:*:*:*:*:* |
| vmware | esxi | 6.0 | cpe:2.3:o:vmware:esxi:6.0:3:*:*:*:*:*:* |
| vmware | esxi | 6.0 | cpe:2.3:o:vmware:esxi:6.0:3a:*:*:*:*:*:* |
| vmware | esxi | 6.5 | cpe:2.3:o:vmware:esxi:6.5:-:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://www.securityfocus.com/bid/97165 | Third Party Advisory VDB Entry |
| http://www.securitytracker.com/id/1038148 | Third Party Advisory VDB Entry |
| http://www.securitytracker.com/id/1038149 | Third Party Advisory VDB Entry |
| http://www.vmware.com/security/advisories/VMSA-2017-0006.html | Vendor Advisory |