CVE-2011-4486

CVE-2011-4486 is a high-severity vulnerability in Cisco Unified Communications Manager with a CVSS 2.0 base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-399.

Key facts

• Severity: High (CVSS 2.0 base score 7.8)
• EPSS exploit prediction: 1% (67th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-399
• Affected product: Cisco Unified Communications Manager
• Published: 2012-03-01
• Last modified: 2026-06-16

Description

Cisco Unified Communications Manager (CUCM) with software 6.x and 7.x before 7.1(5b)su5, 8.0 before 8.0(3a)su3, and 8.5 and 8.6 before 8.6(2a)su1 and Cisco Business Edition 3000 with software before 8.6.3 and 5000 and 6000 with software before 8.6(2a)su1 allow remote attackers to cause a denial of service (device reload) via a crafted SCCP registration, aka Bug ID CSCtu73538.

Frequently asked questions

What is CVE-2011-4486?

Cisco Unified Communications Manager (CUCM) with software 6.x and 7.x before 7.1(5b)su5, 8.0 before 8.0(3a)su3, and 8.5 and 8.6 before 8.6(2a)su1 and Cisco Business Edition 3000 with software before 8.6.3 and 5000 and 6000 with software before 8.6(2a)su1 allow remote attackers to cause a denial of service (device reload) via a crafted SCCP registration, aka Bug ID CSCtu73538.

How severe is CVE-2011-4486?

CVE-2011-4486 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2011-4486 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-4486?

CVE-2011-4486 primarily affects Cisco Unified Communications Manager. In total, 93 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-4486?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2011-4486 published?

CVE-2011-4486 was published on 2012-03-01 and last updated on 2026-06-16.

References

• http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120229-cucm

Affected products (93)

• cpe:2.3:a:cisco:unified_communications_manager:6.0:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:6.0\(1\):*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:6.0\(1a\):*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:6.0\(1b\):*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:6.1\(1\):*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:6.1\(1a\):*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:6.1\(1b\):*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:6.1\(2\):*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:6.1\(2\)su1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:6.1\(2\)su1a:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:6.1\(3\):*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:6.1\(3a\):*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:6.1\(3b\):*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:6.1\(3b\)su1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:6.1\(4\):*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:6.1\(4\)su1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:6.1\(4a\):*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:6.1\(4a\)su2:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:6.1\(5\):*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:6.1\(5\)su1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:6.1\(5\)su2:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:6.1\(5\)su3:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:7.0\(1\)su1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:7.0\(1\)su1a:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:7.0\(2\):*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:7.0\(2a\):*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:7.0\(2a\)su1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:7.0\(2a\)su2:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:7.1\(2a\):*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:7.1\(2a\)su1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:7.1\(2b\):*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:7.1\(2b\)su1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:7.1\(3\):*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:7.1\(3a\):*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:7.1\(3a\)su1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:7.1\(3a\)su1a:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:7.1\(3b\):*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:7.1\(3b\)su1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:7.1\(3b\)su2:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:unified_communications_manager:7.1\(5\):*:*:*:*:*:*:*

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