CVE-2007-2039

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.

Published: 2007-04-16 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2007-2039 is rated Moderate Risk (47.4/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.21%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2007-2039

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.76% 1.21% +0.45%
2 2025-03-30 0.64% 0.76% +0.12%
3 2025-03-29 — 0.64% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2007-2039

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.1 2.0 MEDIUM
AV:A/AC:L/Au:N/C:N/I:N/A:C Click to expand
Access vector (AV:A)
Requires access to an adjacent network segment.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 6.5 6.9 [email protected]

Weakness enumeration for CVE-2007-2039

Affected software / configurations for CVE-2007-2039

Vendor Product Version Raw CPE
cisco wireless_lan_controller_software >= 3.2, < 3.2.171.5 cpe:2.3:o:cisco:wireless_lan_controller_software:*:*:*:*:*:*:*:*
cisco wireless_lan_controller_software >= 4.0, < 4.0.206.0 cpe:2.3:o:cisco:wireless_lan_controller_software:*:*:*:*:*:*:*:*
cisco wireless_lan_controller_software >= 4.1, < 4.1.171.0 cpe:2.3:o:cisco:wireless_lan_controller_software:*:*:*:*:*:*:*:*

References for CVE-2007-2039

cvelogic Threat Intelligence