Is CVE-2012-3949 being actively exploited?

CVE-2012-3949 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2012-3949?

CVE-2012-3949 has a CVSS 2.0 base score of 7.8 (HIGH).

CVE-2012-3949

HIGH · CVSS 7.8EPSS 3.2%EU EUVD

The SIP implementation in Cisco Unified Communications Manager (CUCM) 6.x and 7.x before 7.1(5b)su5, 8.x before 8.5(1)su4, and 8.6 before 8.6(2a)su1; Cisco IOS 12.2 through 12.4 and 15.0 through 15.2; and Cisco IOS XE 3.3.xSG before 3.3.1SG, 3.4.xS, and 3.5.xS allows remote attackers to cause a denial of service (service crash or device reload) via a crafted SIP message containing an SDP session description, aka Bug IDs CSCtw66721, CSCtj33003, and CSCtw84664.

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-20
EPSS score: 3.2% (88th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2012-3893)
Published: September 27, 2012
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2012-3893 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

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References

http://osvdb.org/85816(Broken Link)
http://secunia.com/advisories/50774(Not Applicable)
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120926-cucm(Vendor Advisory)
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120926-sip(Vendor Advisory)
http://www.securityfocus.com/bid/55697(Third Party Advisory, VDB Entry)

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

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