Is CVE-2011-4486 being actively exploited?

CVE-2011-4486 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-4486?

CVE-2011-4486 has a CVSS 2.0 base score of 7.8 (HIGH).

CVE-2011-4486

HIGH · CVSS 7.8EPSS 1.2%EU EUVD

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.

Key facts

CVSS score: 7.8 (v2.0)
Severity: HIGH
CVSS vector: AV:N/AC:L/Au:N/C:N/I:N/A:C
Weakness (CWE): CWE-399
EPSS score: 1.2% (68th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-4412)
Published: March 1, 2012
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-4412 in the EU Vulnerability Database. Last updated in EUVD on September 17, 2024.

View on the EU Vulnerability Database

Affected products

cisco / business edition 3000
cisco / business edition 3000 software
cisco / business edition 3000 software
cisco / business edition 3000 software
cisco / business edition 3000 software
cisco / business edition 5000
cisco / business edition 5000 software
cisco / business edition 5000 software
cisco / business edition 5000 software
cisco / business edition 5000 software
cisco / business edition 5000 software
cisco / business edition 5000 software
cisco / business edition 5000 software
cisco / business edition 6000
cisco / business edition 6000 software
cisco / business edition 6000 software
cisco / business edition 6000 software
cisco / business edition 6000 software
cisco / business edition 6000 software
cisco / business edition 6000 software
cisco / business edition 6000 software
cisco / business edition 6000 software
cisco / business edition 6000 software
cisco / unified communications manager
cisco / unified communications manager
cisco / unified communications manager
cisco / unified communications manager
cisco / unified communications manager
cisco / unified communications manager
cisco / unified communications manager
cisco / unified communications manager
cisco / unified communications manager
cisco / unified communications manager
cisco / unified communications manager
cisco / unified communications manager
cisco / unified communications manager
cisco / unified communications manager
cisco / unified communications manager
cisco / unified communications manager
cisco / unified communications manager
cisco / unified communications manager
cisco / unified communications manager
cisco / unified communications manager
cisco / unified communications manager
cisco / unified communications manager
cisco / unified communications manager
cisco / unified communications manager
cisco / unified communications manager
cisco / unified communications manager
cisco / unified communications manager

and 43 more…

References

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120229-cucm(Vendor Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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