The web portal interface in Citrix Access Gateway (aka Citrix Advanced Access Control) before Advanced Edition 4.5 HF1 places a session ID in the URL, which allows context-dependent attackers to hijack sessions by reading "residual information", including the a referer log, browser history, or browser cache.
Conclusion & alert: CVE-2007-0011 is rated Moderate Risk (48.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.12%). 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 | 2026-06-15 | 1.33% | 2.12% | +0.79% |
| 2 | 2026-01-20 | 1.25% | 1.33% | +0.09% |
| 3 | 2025-11-30 | — | 1.25% | — |
Full EPSS history (17 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| citrix | access_gateway | 4.0 | cpe:2.3:a:citrix:access_gateway:4.0:*:*:*:*:*:*:* |
| citrix | access_gateway | 4.2 | cpe:2.3:a:citrix:access_gateway:4.2:*:*:*:*:*:*:* |
| citrix | access_gateway | 4.5 | cpe:2.3:a:citrix:access_gateway:4.5:*:advanced:*:*:*:*:* |
| citrix | access_gateway | 4.5 | cpe:2.3:a:citrix:access_gateway:4.5:*:standard:*:*:*:*:* |