The Network Processing Unit (NPU) in the Cisco Wireless LAN Controller (WLC) before 126.96.36.199, 4.0.x before 188.8.131.52, and 4.1.x allows remote attackers on a local wireless network to cause a denial of service (loss of packet forwarding) via (1) crafted SNAP packets, (2) malformed 802.11 traffic, or (3) packets with certain header length values, aka Bug IDs CSCsg15901 and CSCsh10841.
CVSS Severity (version 2.0):
Impact Subscore: 6.9
Exploitability Subscore: 6.5
CVSS Version 2 Metrics:
Access Vector: Local network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows disruption of service
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20070412 Multiple Vulnerabilities in the Cisco Wireless LAN Controller and Cisco Lightweight Access Points
Advisory; Patch Information
Vulnerable software and versions