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CVE-2009-1165

• Severity: high (CVSS 7.8 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2009-07-29 · updated 2026-06-16
• Weakness: CWE-399

Description

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.

Affected products

• Cisco Catalyst 3750G: all versions
• Cisco 1500 Wireless Lan Controller: 4.1, 4.1m, 4.2, 5.0, 5.1, 5.2
• Cisco 2000 Wireless Lan Controller: 4.1, 4.1m, 4.2, 5.0, 5.1, 5.2
• Cisco 2100 Wireless Lan Controller: 4.1, 4.1m, 4.2, 5.0, 5.1, 5.2
• Cisco 4100 Wireless Lan Controller: 4.1, 4.1m, 4.2, 5.0, 5.1, 5.2
• Cisco 4200 Wireless Lan Controller: 4.1, 4.1m, 4.2, 5.0, 5.1, 5.2
• Cisco 4400 Wireless Lan Controller: 4.1, 4.1m, 4.2, 5.0, 5.1, 5.2

References

• http://www.cisco.com/en/US/products/products_security_advisory09186a0080adb3d7.shtml
• http://www.securityfocus.com/bid/35817
• http://www.securitytracker.com/id?1022605
• http://www.vupen.com/english/advisories/2009/2021
• http://www.cisco.com/en/US/products/products_security_advisory09186a0080adb3d7.shtml
• http://www.securityfocus.com/bid/35817
• http://www.securitytracker.com/id?1022605
• http://www.vupen.com/english/advisories/2009/2021

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