CVE-2009-1165

Memory leak on the Cisco Wireless LAN Controller (WLC) platform 4.x before 4.2.205.0, 5.1 before 5.1.163.0, and 5.0 and 5.2 before 5.2.178.0, as used in Cisco 1500 Series, 2000 Series, 2100 Series, 4100 Series, 4200 Series, and 4400 Series Wireless Services Modules (WiSM), WLC Modules for Integrated Services Routers, and Catalyst 3750G Integrated Wireless LAN Controllers, allows remote attackers to cause a denial of service (memory consumption and device reload) via SSH management connections, aka Bug ID CSCsw40789.

Published: 2009-07-29 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-1165 is rated Moderate Risk (57.7/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.62%). 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-2009-1165

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 0.64% 1.62% +0.97%
2 2025-03-30 0.55% 0.64% +0.10%
3 2025-03-29 — 0.55% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-1165

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 2.0 HIGH
AV:N/AC:L/Au:N/C:N/I:N/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
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.
 10.0 6.9 [email protected]

Weakness enumeration for CVE-2009-1165

Affected software / configurations for CVE-2009-1165

Vendor Product Version Raw CPE
cisco catalyst_3750g — cpe:2.3:h:cisco:catalyst_3750g:*:*:*:*:*:*:*:*
cisco cisco_1500_wireless_lan_controller 4.1 cpe:2.3:h:cisco:cisco_1500_wireless_lan_controller:4.1:*:*:*:*:*:*:*
cisco cisco_1500_wireless_lan_controller 4.1m cpe:2.3:h:cisco:cisco_1500_wireless_lan_controller:4.1m:*:*:*:*:*:*:*
cisco cisco_1500_wireless_lan_controller 4.2 cpe:2.3:h:cisco:cisco_1500_wireless_lan_controller:4.2:*:*:*:*:*:*:*
cisco cisco_1500_wireless_lan_controller 5.0 cpe:2.3:h:cisco:cisco_1500_wireless_lan_controller:5.0:*:*:*:*:*:*:*
cisco cisco_1500_wireless_lan_controller 5.1 cpe:2.3:h:cisco:cisco_1500_wireless_lan_controller:5.1:*:*:*:*:*:*:*
cisco cisco_1500_wireless_lan_controller 5.2 cpe:2.3:h:cisco:cisco_1500_wireless_lan_controller:5.2:*:*:*:*:*:*:*
cisco cisco_2000_wireless_lan_controller 4.1 cpe:2.3:h:cisco:cisco_2000_wireless_lan_controller:4.1:*:*:*:*:*:*:*
cisco cisco_2000_wireless_lan_controller 4.1m cpe:2.3:h:cisco:cisco_2000_wireless_lan_controller:4.1m:*:*:*:*:*:*:*
cisco cisco_2000_wireless_lan_controller 4.2 cpe:2.3:h:cisco:cisco_2000_wireless_lan_controller:4.2:*:*:*:*:*:*:*
cisco cisco_2000_wireless_lan_controller 5.0 cpe:2.3:h:cisco:cisco_2000_wireless_lan_controller:5.0:*:*:*:*:*:*:*
cisco cisco_2000_wireless_lan_controller 5.1 cpe:2.3:h:cisco:cisco_2000_wireless_lan_controller:5.1:*:*:*:*:*:*:*
cisco cisco_2000_wireless_lan_controller 5.2 cpe:2.3:h:cisco:cisco_2000_wireless_lan_controller:5.2:*:*:*:*:*:*:*
cisco cisco_2100_wireless_lan_controller 4.1 cpe:2.3:h:cisco:cisco_2100_wireless_lan_controller:4.1:*:*:*:*:*:*:*
cisco cisco_2100_wireless_lan_controller 4.1m cpe:2.3:h:cisco:cisco_2100_wireless_lan_controller:4.1m:*:*:*:*:*:*:*
cisco cisco_2100_wireless_lan_controller 4.2 cpe:2.3:h:cisco:cisco_2100_wireless_lan_controller:4.2:*:*:*:*:*:*:*
cisco cisco_2100_wireless_lan_controller 5.0 cpe:2.3:h:cisco:cisco_2100_wireless_lan_controller:5.0:*:*:*:*:*:*:*
cisco cisco_2100_wireless_lan_controller 5.1 cpe:2.3:h:cisco:cisco_2100_wireless_lan_controller:5.1:*:*:*:*:*:*:*
cisco cisco_2100_wireless_lan_controller 5.2 cpe:2.3:h:cisco:cisco_2100_wireless_lan_controller:5.2:*:*:*:*:*:*:*
cisco cisco_4100_wireless_lan_controller 4.1 cpe:2.3:h:cisco:cisco_4100_wireless_lan_controller:4.1:*:*:*:*:*:*:*
cisco cisco_4100_wireless_lan_controller 4.1m cpe:2.3:h:cisco:cisco_4100_wireless_lan_controller:4.1m:*:*:*:*:*:*:*
cisco cisco_4100_wireless_lan_controller 4.2 cpe:2.3:h:cisco:cisco_4100_wireless_lan_controller:4.2:*:*:*:*:*:*:*
cisco cisco_4100_wireless_lan_controller 5.0 cpe:2.3:h:cisco:cisco_4100_wireless_lan_controller:5.0:*:*:*:*:*:*:*
cisco cisco_4100_wireless_lan_controller 5.1 cpe:2.3:h:cisco:cisco_4100_wireless_lan_controller:5.1:*:*:*:*:*:*:*
cisco cisco_4100_wireless_lan_controller 5.2 cpe:2.3:h:cisco:cisco_4100_wireless_lan_controller:5.2:*:*:*:*:*:*:*
cisco cisco_4200_wireless_lan_controller 4.1 cpe:2.3:h:cisco:cisco_4200_wireless_lan_controller:4.1:*:*:*:*:*:*:*
cisco cisco_4200_wireless_lan_controller 4.1m cpe:2.3:h:cisco:cisco_4200_wireless_lan_controller:4.1m:*:*:*:*:*:*:*
cisco cisco_4200_wireless_lan_controller 4.2 cpe:2.3:h:cisco:cisco_4200_wireless_lan_controller:4.2:*:*:*:*:*:*:*
cisco cisco_4200_wireless_lan_controller 5.0 cpe:2.3:h:cisco:cisco_4200_wireless_lan_controller:5.0:*:*:*:*:*:*:*
cisco cisco_4200_wireless_lan_controller 5.1 cpe:2.3:h:cisco:cisco_4200_wireless_lan_controller:5.1:*:*:*:*:*:*:*
cisco cisco_4200_wireless_lan_controller 5.2 cpe:2.3:h:cisco:cisco_4200_wireless_lan_controller:5.2:*:*:*:*:*:*:*
cisco cisco_4400_wireless_lan_controller 4.1 cpe:2.3:h:cisco:cisco_4400_wireless_lan_controller:4.1:*:*:*:*:*:*:*
cisco cisco_4400_wireless_lan_controller 4.1m cpe:2.3:h:cisco:cisco_4400_wireless_lan_controller:4.1m:*:*:*:*:*:*:*
cisco cisco_4400_wireless_lan_controller 4.2 cpe:2.3:h:cisco:cisco_4400_wireless_lan_controller:4.2:*:*:*:*:*:*:*
cisco cisco_4400_wireless_lan_controller 5.0 cpe:2.3:h:cisco:cisco_4400_wireless_lan_controller:5.0:*:*:*:*:*:*:*
cisco cisco_4400_wireless_lan_controller 5.1 cpe:2.3:h:cisco:cisco_4400_wireless_lan_controller:5.1:*:*:*:*:*:*:*
cisco cisco_4400_wireless_lan_controller 5.2 cpe:2.3:h:cisco:cisco_4400_wireless_lan_controller:5.2:*:*:*:*:*:*:*

References for CVE-2009-1165

cvelogic Threat Intelligence