Unspecified vulnerability in Citrix Access Gateway Standard Edition 4.5.7 and earlier and Advanced Edition 4.5 HF2 and earlier allows attackers to bypass authentication and gain "access to network resources" via unspecified vectors.
Conclusion & alert: CVE-2008-2528 is rated High Risk (70.8/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.71%). Core evidence: EPSS rose +1.38% over the last day, indicating growing attacker interest. Mandatory action: High exploitation likelihood—assess exposure and prioritize 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% | 2.71% | +1.38% |
| 2 | 2025-03-30 | 2.88% | 1.33% | -1.55% |
| 3 | 2025-03-29 | — | 2.88% | — |
Full EPSS history (6 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 10.0 | 2.0 | HIGH |
|
10.0 | 10.0 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| citrix | access_gateway | <= 4.5 | cpe:2.3:a:citrix:access_gateway:*:advanced:hf2:*:*:*:*:* |
| citrix | access_gateway | <= 4.5.7 | cpe:2.3:a:citrix:access_gateway:*:*:standard:*:*:*:*:* |
| citrix | access_gateway | 4.5.5 | cpe:2.3:a:citrix:access_gateway:4.5.5:*:standard:*:*:*:*:* |
| citrix | access_gateway | 4.5.6 | cpe:2.3:a:citrix:access_gateway:4.5.6:*:standard:*:*:*:*:* |