The Network Processing Unit (NPU) in the Cisco Wireless LAN Controller (WLC) before 3.2.193.5, 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 ID CSCsg36361.
Conclusion & alert: CVE-2007-2038 is rated Moderate Risk (47.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.57%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
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 | 2025-03-30 | 0.48% | 0.57% | +0.09% |
| 2 | 2025-03-29 | 0.57% | 0.48% | -0.09% |
| 3 | 2025-03-17 | — | 0.57% | — |
Full EPSS history (10 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.1 | 2.0 | MEDIUM |
|
6.5 | 6.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| cisco | 2000_wireless_lan_controller | — | cpe:2.3:h:cisco:2000_wireless_lan_controller:*:*:*:*:*:*:*:* |
| cisco | 2100_wireless_lan_controller | — | cpe:2.3:h:cisco:2100_wireless_lan_controller:*:*:*:*:*:*:*:* |
| cisco | 4100_wireless_lan_controller | — | cpe:2.3:h:cisco:4100_wireless_lan_controller:*:*:*:*:*:*:*:* |
| cisco | 4400_wireless_lan_controller | — | cpe:2.3:h:cisco:4400_wireless_lan_controller:*:*:*:*:*:*:*:* |