CVE-2011-2057

HIGH

Cisco IOS 12.2 < 12.2(33)SXI7 - Denial of Service via Spanning Tree Protocol BPDU Frame Storm

Title source: llm
STIX 2.1

Description

The cat6000-dot1x component in Cisco IOS 12.2 before 12.2(33)SXI7 does not properly handle (1) a loop between a dot1x enabled port and an open-authentication dot1x enabled port and (2) a loop between a dot1x enabled port and a non-dot1x port, which allows remote attackers to cause a denial of service (traffic storm) via unspecified vectors that trigger many Spanning Tree Protocol (STP) Bridge Protocol Data Unit (BPDU) frames, aka Bug ID CSCtq36327.

References (1)

Core 1

Scores

CVSS v3 7.5
EPSS 0.0178
EPSS Percentile 75.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-20
Status published
Products (1)
cisco/ios 12.2 - 12.2\(33\)sxi7
Published Oct 22, 2011
Tracked Since Feb 18, 2026