The Windows Guest Tools in Citrix XenServer 6.2 SP1 and earlier allows remote attackers to cause a denial of service (guest OS crash) via a crafted Ethernet frame.
Conclusion & alert: CVE-2014-3798 is rated Moderate Risk (57.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 4.53%). 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 | 2026-04-26 | 4.61% | 4.53% | -0.08% |
| 2 | 2025-03-30 | 4.53% | 4.61% | +0.09% |
| 3 | 2025-03-29 | — | 4.53% | — |
Full EPSS history (11 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.5 | 3.0 | MEDIUM |
|
2.8 | 3.6 | [email protected] |
| 6.1 | 2.0 | MEDIUM |
|
6.5 | 6.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| citrix | xenserver | 6.0 | cpe:2.3:a:citrix:xenserver:6.0:*:*:*:*:*:*:* |
| citrix | xenserver | 6.0.2 | cpe:2.3:a:citrix:xenserver:6.0.2:*:*:*:*:*:*:* |
| citrix | xenserver | 6.1.0 | cpe:2.3:a:citrix:xenserver:6.1.0:*:*:*:*:*:*:* |
| citrix | xenserver | 6.2.0 | cpe:2.3:a:citrix:xenserver:6.2.0:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://secunia.com/advisories/58455 | Permissions Required Third Party Advisory |
| http://support.citrix.com/article/CTX140814 | Patch Vendor Advisory |
| http://www.securityfocus.com/bid/67693 | Third Party Advisory VDB Entry |
| http://www.securitytracker.com/id/1030304 | Third Party Advisory VDB Entry |