CVE-2006-4430

MEDIUM 5.0CVE-2006-4430 · Published 29/08/2006 · updated 16/06/2026

In short

CVE-2006-4430 is a MEDIUM (CVSS 5.0) vulnerability affecting network admission control (cisco), network admission control manager and server system software (cisco).
Chance of exploitation in the next 30 days (EPSS): 2.0%, higher than 80.4% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
network admission control cisco	`≤ 3.6.4.1`	No fix yet
network admission control manager and server system software cisco	`= 3.3= 3.3.1= 3.3.2= 3.3.3= 3.3.4= 3.3.5= 3.3.6= 3.3.7= 3.3.8= 3.3.9= 3.4= 3.4.1= 3.4.2= 3.4.3= 3.4.4= 3.4.5= 3.5= 3.5(9)= 3.5.1= 3.5.2= 3.5.3= 3.5.4= 3.5.5= 3.6.0.1= 3.6.4.0.1`	No fix yet

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.

References

More vulnerabilities in network admission control

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