Unrated severityNVD Advisory· Published Aug 29, 2006· Updated Jun 16, 2026
CVE-2006-4430
CVE-2006-4430
Description
The Cisco Network Admission Control (NAC) 3.6.4.1 and earlier allows remote attackers to prevent installation of the Cisco Clean Access (CCA) Agent and bypass local and remote protection mechanisms by modifying (1) the HTTP User-Agent header or (2) the behavior of the TCP/IP stack. NOTE: the vendor has disputed the severity of this issue, stating that users cannot bypass authentication mechanisms.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
28cpe:2.3:a:cisco:network_admission_control:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:cisco:network_admission_control:*:*:*:*:*:*:*:*range: <=3.6.4.1
- (no CPE)range: <=3.6.4.1
cpe:2.3:a:cisco:network_admission_control_manager_and_server_system_software:3.3:*:*:*:*:*:*:*+ 24 more
- cpe:2.3:a:cisco:network_admission_control_manager_and_server_system_software:3.3:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:network_admission_control_manager_and_server_system_software:3.3.1:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:network_admission_control_manager_and_server_system_software:3.3.2:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:network_admission_control_manager_and_server_system_software:3.3.3:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:network_admission_control_manager_and_server_system_software:3.3.4:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:network_admission_control_manager_and_server_system_software:3.3.5:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:network_admission_control_manager_and_server_system_software:3.3.6:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:network_admission_control_manager_and_server_system_software:3.3.7:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:network_admission_control_manager_and_server_system_software:3.3.8:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:network_admission_control_manager_and_server_system_software:3.3.9:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:network_admission_control_manager_and_server_system_software:3.4:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:network_admission_control_manager_and_server_system_software:3.4.1:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:network_admission_control_manager_and_server_system_software:3.4.2:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:network_admission_control_manager_and_server_system_software:3.4.3:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:network_admission_control_manager_and_server_system_software:3.4.4:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:network_admission_control_manager_and_server_system_software:3.4.5:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:network_admission_control_manager_and_server_system_software:3.5:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:network_admission_control_manager_and_server_system_software:3.5.1:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:network_admission_control_manager_and_server_system_software:3.5.2:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:network_admission_control_manager_and_server_system_software:3.5.3:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:network_admission_control_manager_and_server_system_software:3.5.4:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:network_admission_control_manager_and_server_system_software:3.5.5:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:network_admission_control_manager_and_server_system_software:3.5\(9\):*:*:*:*:*:*:*
- cpe:2.3:a:cisco:network_admission_control_manager_and_server_system_software:3.6.0.1:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:network_admission_control_manager_and_server_system_software:3.6.4.0.1:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
8- archive.cert.uni-stuttgart.de/archive/bugtraq/2005/08/msg00200.htmlnvd
- www.cisco.com/en/US/products/ps6128/products_security_notice09186a00804fa82b.htmlnvd
- www.cisco.com/en/US/products/ps6128/tsd_products_security_response09186a008071d609.htmlnvd
- www.securityfocus.com/archive/1/408603/30/0/threadednvd
- www.securityfocus.com/archive/1/444424/100/0/threadednvd
- www.securityfocus.com/archive/1/444501/100/0/threadednvd
- www.securityfocus.com/archive/1/444737/100/0/threadednvd
- www.securityfocus.com/bid/19726nvd
News mentions
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