Current Description

The Network Processing Unit (NPU) in the Cisco Wireless LAN Controller (WLC) before, 4.0.x before, 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.

Basic Data

PublishedApril 16, 2007
Last ModifiedNovember 01, 2018
Data TypeCVE
Data FormatMITRE
Data Version4.0
Problem TypeCWE-399
CVE Data Version4.0

Base Metric V2

CVSS 2 - Version2.0
CVSS 2 - Vector StringAV:A/AC:L/Au:N/C:N/I:N/A:C
CVSS 2 - Access ComplexityLOW
CVSS 2 - AuthenticationNONE
CVSS 2 - Confidentiality ImpactNONE
CVSS 2 - Availability ImpactCOMPLETE
CVSS 2 - Base Score6.1
Exploitability Score6.5
Impact Score6.9
Obtain All Privilegefalse
Obtain User Privilegefalse
Obtain Other Privilegefalse

Base Metric V3

No data provided.


  • OR - Configuration 1
    Cpe VersionPartVendorProductVersionUpdateEditionLanguageSW EditionTarget SWTarget HWOtherVersion Start IncludingVersion End IncludingVersion Start ExcludingVersion End Excluding
    2.3OSCiscoWireless Lan Controller Software********
    2.3OSCiscoWireless Lan Controller Software********
    2.3OSCiscoWireless Lan Controller Software********

Vulnerable Software List

Cisco Wireless Lan Controller Software *


1017908 Party Advisory VDB Entry
20070412 Multiple Vulnerabilities in the Cisco Wireless LAN Controller and Cisco Lightweight Access Points Vendor Advisory
34137 Link
34139 Link
23461 Party Advisory VDB Entry
ADV-2007-1368 Party Advisory
cisco-wlc-npu-traffic-dos(33609) Party Advisory VDB Entry