CVE-2011-4023: Cisco Nexus 2148t Fex Switch

High severity, CVSS 7.8. EPSS: 1.3% chance of exploitation in the next 30 days.

Memory leak in libcmd in Cisco NX-OS 5.0 on Nexus switches allows remote authenticated users to cause a denial of service (memory consumption) via SNMP requests, aka Bug ID CSCtr65682.

Affected products

• Cisco Nexus 2148t Fex Switch
• Cisco Nexus 2224tp Fex Switch
• Cisco Nexus 2232pp Fex Switch
• Cisco Nexus 2232tm Fex Switch
• Cisco Nexus 2248tp E Fex Switch
• Cisco Nexus 2248tp Fex Switch
• Cisco Nexus 5010p Switch
• Cisco Nexus 5020p Switch
• Cisco Nexus 5548p
• Cisco Nexus 5548up
• Cisco Nexus 5596up
• Cisco NX-OS: version 5.0 only; version 5.0(2) only; version 5.0(2)n1(1) only; version 5.0(2)n2(1) only; version 5.0(2)n2(1a) only; version 5.0(2a) only; …

Published 2012-05-03. Last modified 2026-06-16.