Cisco Secure Access Control Server (ACS) 4.x for Windows uses the client's IP address and the server's port number to grant access to an HTTP server port for an administration session, which allows remote attackers to bypass authentication via various methods, aka "ACS Weak Session Management Vulnerability."
Conclusion & alert: CVE-2006-3226 is rated Moderate Risk (58.9/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.34%). 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 | 1.90% | 2.34% | +0.45% |
| 2 | 2025-11-17 | 1.41% | 1.90% | +0.49% |
| 3 | 2025-08-15 | — | 1.41% | — |
Full EPSS history (18 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| cisco | secure_access_control_server | 4.0 | cpe:2.3:a:cisco:secure_access_control_server:4.0:*:windows:*:*:*:*:* |
| cisco | secure_access_control_server | 4.0.1 | cpe:2.3:a:cisco:secure_access_control_server:4.0.1:*:windows:*:*:*:*:* |