CVE-2011-2560

Severity: high (CVSS 7.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-08-29 · updated 2026-06-16
Weakness: CWE-399

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.

Affected products

Cisco Unified Communications Manager: 4.1(3), 4.1(3)sr1, 4.1(3)sr2, 4.1(3)sr3, 4.1(3)sr4, 4.2 (+8)

References

http://www.cisco.com/en/US/products/products_security_advisory09186a0080b8f531.shtml
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b8f531.shtml

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