Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2011-2072

Memory leak in Cisco IOS 12.4, 15.0, and 15.1, Cisco IOS XE 2.5.x through 3.2.x, and Cisco Unified Communications Manager (CUCM) 6.x and 7.x before 7.1(5b)su4, 8.x before 8.5(1)su2, and 8.6 before 8.6(1) allows remote attackers to cause a denial of service (memory consumption and device reload or process failure) via a malformed SIP message, aka Bug IDs CSCtl86047 and CSCto88686.

Security Impact Summary

CVE-2011-2072 is a security vulnerability that . Impacting 3 products from cisco, from cisco, from cisco organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2011, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2011-10-03T23:55:03.453

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 7.8 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: COMPLETE

Exploitability Score

10.0

Impact Score

6.9

Weaknesses

Type: Primary
CWE-399

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	cisco	ios	12.4	Yes
Operating System	cisco	ios	15.0	Yes
Operating System	cisco	ios	15.1	Yes
Operating System	cisco	ios_xe	2.5.0	Yes
Operating System	cisco	ios_xe	2.5.1	Yes
Operating System	cisco	ios_xe	2.5.2	Yes
Operating System	cisco	ios_xe	2.6.0	Yes
Operating System	cisco	ios_xe	2.6.1	Yes
Operating System	cisco	ios_xe	2.6.2	Yes
Operating System	cisco	ios_xe	3.1.0s	Yes
Operating System	cisco	ios_xe	3.1.1s	Yes
Operating System	cisco	ios_xe	3.1.2s	Yes
Operating System	cisco	ios_xe	3.1.3s	Yes
Operating System	cisco	ios_xe	3.1.4s	Yes
Operating System	cisco	ios_xe	3.2.0s	Yes
Operating System	cisco	ios_xe	3.2.1s	Yes
Operating System	cisco	ios_xe	3.2.2s	Yes
Application	cisco	unified_communications_manager	6.0	Yes
Application	cisco	unified_communications_manager	6.1\(1\)	Yes
Application	cisco	unified_communications_manager	6.1\(1a\)	Yes
Application	cisco	unified_communications_manager	6.1\(1b\)	Yes
Application	cisco	unified_communications_manager	6.1\(2\)	Yes
Application	cisco	unified_communications_manager	6.1\(2\)su1	Yes
Application	cisco	unified_communications_manager	6.1\(2\)su1a	Yes
Application	cisco	unified_communications_manager	6.1\(3\)	Yes
Application	cisco	unified_communications_manager	6.1\(3a\)	Yes
Application	cisco	unified_communications_manager	6.1\(3b\)	Yes
Application	cisco	unified_communications_manager	6.1\(3b\)su1	Yes
Application	cisco	unified_communications_manager	6.1\(4\)	Yes
Application	cisco	unified_communications_manager	6.1\(4\)su1	Yes
Application	cisco	unified_communications_manager	6.1\(4a\)	Yes
Application	cisco	unified_communications_manager	6.1\(4a\)su2	Yes
Application	cisco	unified_communications_manager	6.1\(5\)	Yes
Application	cisco	unified_communications_manager	6.1\(5\)su1	Yes
Application	cisco	unified_communications_manager	6.1\(5\)su2	Yes
Application	cisco	unified_communications_manager	7.0\(1\)su1	Yes
Application	cisco	unified_communications_manager	7.0\(1\)su1a	Yes
Application	cisco	unified_communications_manager	7.0\(2\)	Yes
Application	cisco	unified_communications_manager	7.0\(2a\)	Yes
Application	cisco	unified_communications_manager	7.0\(2a\)su1	Yes
Application	cisco	unified_communications_manager	7.0\(2a\)su2	Yes
Application	cisco	unified_communications_manager	7.1\(2a\)	Yes
Application	cisco	unified_communications_manager	7.1\(2a\)su1	Yes
Application	cisco	unified_communications_manager	7.1\(2b\)	Yes
Application	cisco	unified_communications_manager	7.1\(2b\)su1	Yes
Application	cisco	unified_communications_manager	7.1\(3\)	Yes
Application	cisco	unified_communications_manager	7.1\(3a\)	Yes
Application	cisco	unified_communications_manager	7.1\(3a\)su1	Yes
Application	cisco	unified_communications_manager	7.1\(3a\)su1a	Yes
Application	cisco	unified_communications_manager	7.1\(3b\)	Yes
Application	cisco	unified_communications_manager	7.1\(3b\)su1	Yes
Application	cisco	unified_communications_manager	7.1\(3b\)su2	Yes
Application	cisco	unified_communications_manager	7.1\(5\)	Yes
Application	cisco	unified_communications_manager	7.1\(5\)su1	Yes
Application	cisco	unified_communications_manager	7.1\(5\)su1a	Yes
Application	cisco	unified_communications_manager	7.1\(5a\)	Yes
Application	cisco	unified_communications_manager	7.1\(5b\)	Yes
Application	cisco	unified_communications_manager	7.1\(5b\)su1	Yes
Application	cisco	unified_communications_manager	7.1\(5b\)su1a	Yes
Application	cisco	unified_communications_manager	7.1\(5b\)su2	Yes
Application	cisco	unified_communications_manager	7.1\(5b\)su3	Yes
Application	cisco	unified_communications_manager	8.0\(1\)	Yes
Application	cisco	unified_communications_manager	8.0\(2\)	Yes
Application	cisco	unified_communications_manager	8.0\(2a\)	Yes
Application	cisco	unified_communications_manager	8.0\(2b\)	Yes
Application	cisco	unified_communications_manager	8.0\(2c\)	Yes
Application	cisco	unified_communications_manager	8.0\(2c\)su1	Yes
Application	cisco	unified_communications_manager	8.0\(3\)	Yes
Application	cisco	unified_communications_manager	8.0\(3a\)	Yes
Application	cisco	unified_communications_manager	8.0\(3a\)su1	Yes
Application	cisco	unified_communications_manager	8.0\(3a\)su2	Yes
Application	cisco	unified_communications_manager	8.5\(1\)	Yes
Application	cisco	unified_communications_manager	8.5\(1\)su1	Yes
Application	cisco	unified_communications_manager	8.6	Yes

References

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20110928-cucm ([email protected])
http://tools.cisco.com/security/center/viewAlert.x?alertId=24129 ([email protected])
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b95d58.shtml Vendor Advisory ([email protected])
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b95d5a.shtml Vendor Advisory ([email protected])
http://www.securitytracker.com/id?1026110 ([email protected])
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20110928-cucm (af854a3a-2127-422b-91ae-364da2661108)
http://tools.cisco.com/security/center/viewAlert.x?alertId=24129 (af854a3a-2127-422b-91ae-364da2661108)
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b95d58.shtml Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b95d5a.shtml Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id?1026110 (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For cisco's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.