What’s Vulnerable › Vulnerabilities

CVE-2007-2039

• Severity: medium (CVSS 6.1 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2007-04-16 · updated 2026-06-16
• Weakness: CWE-399

Description

The Network Processing Unit (NPU) in the Cisco Wireless LAN Controller (WLC) before 3.2.171.5, 4.0.x before 4.0.206.0, 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.

Affected products

• Cisco Wireless LAN Controller (WLC): from 3.2 before 3.2.171.5; from 4.0 before 4.0.206.0; from 4.1 before 4.1.171.0 — fixed in 3.2.171.5, 4.0.206.0, 4.1.171.0

How to fix

Upgrade to a fixed version: Cisco Wireless LAN Controller (WLC) 3.2.171.5, 4.0.206.0, 4.1.171.0. Check the vendor advisory for mitigations.

References

• http://securitytracker.com/id?1017908
• http://www.cisco.com/warp/public/707/cisco-sa-20070412-wlc.shtml
• http://www.osvdb.org/34137
• http://www.osvdb.org/34139
• http://www.securityfocus.com/bid/23461
• http://www.vupen.com/english/advisories/2007/1368
• https://exchange.xforce.ibmcloud.com/vulnerabilities/33609
• http://securitytracker.com/id?1017908
• http://www.cisco.com/warp/public/707/cisco-sa-20070412-wlc.shtml
• http://www.osvdb.org/34137
• http://www.osvdb.org/34139
• http://www.securityfocus.com/bid/23461

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