Summary
generated automatically from NVD dataCVE-2011-3276 is an unspecified vulnerability in the NAT implementation of Cisco IOS (12.1 through 12.4 and 15.0 through 15.1) and IOS XE 3.1.xSG. A remote attacker can send crafted SIP packets to TCP port 5060 and cause a denial of service, either a device reload or a hang. The issue is tracked as Bug ID CSCso02147 and has a CVSS v2.0 score of 7.8 (HIGH), with network access and no authentication required.
NVD description
Unspecified vulnerability in the NAT implementation in Cisco IOS 12.1 through 12.4 and 15.0 through 15.1, and IOS XE 3.1.xSG, allows remote attackers to cause a denial of service (device reload or hang) by sending crafted SIP packets to TCP port 5060, aka Bug ID CSCso02147.
EPSS · FIRST.org
1.8%probability of exploitation in the next 30 days
Higher than 77% of scored CVEs
EPSS (Exploit Prediction Scoring System) estimates, from observed exploitation activity, how likely a CVE is to be exploited in the next 30 days. It complements CVSS, which measures severity, not likelihood. Score of 2026-10-20, recomputed daily by FIRST.org.
CVSS v2.0 Score
Information
- Published
- 3 oct. 2011
- Updated
- 16 juin 2026
- Status
- Modified
- Source
- psirt@cisco.com
Affected products
Weaknesses (CWE)
References (4)
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