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Unrated severityNVD Advisory· Published Aug 29, 2011· Updated Jun 16, 2026

CVE-2011-2560

CVE-2011-2560

Description

The Packet Capture Service in Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 4.x does not properly handle idle TCP connections, which allows remote attackers to cause a denial of service (memory consumption and restart) by making many connections, aka Bug ID CSCtf97162.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

15
  • Cisco Systems, Inc./Unified Communications Manager15 versions
    cpe:2.3:a:cisco:unified_communications_manager:4.1\(3\):*:*:*:*:*:*:*+ 14 more
    • cpe:2.3:a:cisco:unified_communications_manager:4.1\(3\):*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:unified_communications_manager:4.1\(3\)sr1:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:unified_communications_manager:4.1\(3\)sr2:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:unified_communications_manager:4.1\(3\)sr3:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:unified_communications_manager:4.1\(3\)sr4:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:unified_communications_manager:4.2:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:unified_communications_manager:4.2.1:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:unified_communications_manager:4.2.2:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:unified_communications_manager:4.2.3:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:unified_communications_manager:4.2.3sr1:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:unified_communications_manager:4.2.3sr2:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:unified_communications_manager:4.2.3sr2b:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:unified_communications_manager:4.3:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:unified_communications_manager:4.3\(1\):*:*:*:*:*:*:*
    • (no CPE)range: 4.x

Patches

Vulnerability mechanics

References

1

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