The default configuration of the RADIUS authentication feature on the Cisco Network Access Control (NAC) Guest Server with software before 2.0.3 allows remote attackers to bypass intended access restrictions and obtain network connectivity via unspecified vectors, aka Bug ID CSCtj66922.
CVSS Severity (version 2.0):
Impact Subscore: 2.9
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information
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20110330 Cisco Network Access Control Guest Server System Software Authentication Bypass Vulnerability
Advisory; Patch Information
20110330 Cisco Network Admission Control Guest Server System Software Authentication Bypass Vulnerability