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CVE-2006-0340

Unspecified vulnerability in Stack Group Bidding Protocol (SGBP) support in Cisco IOS 12.0 through 12.4 running on various Cisco products, when SGBP is enabled, allows remote attackers on the local network to cause a denial of service (device hang and network traffic loss) via a crafted UDP packet to port 9900.

Published: Jan 21, 2006 Modified: Jun 16, 2026
CWE-20

CVSS Metrics

Affected Products (108)

Vendor Product Version
cisco ios 12.0
cisco ios 12.0s
cisco ios 12.0sc
cisco ios 12.0t
cisco ios 12.0xa
cisco ios 12.0xc
cisco ios 12.0xd
cisco ios 12.0xe
cisco ios 12.0xg
cisco ios 12.0xh
cisco ios 12.0xi
cisco ios 12.0xj
cisco ios 12.0xk
cisco ios 12.0xl
cisco ios 12.0xn
cisco ios 12.0xr
cisco ios 12.1
cisco ios 12.1aa
cisco ios 12.1e
cisco ios 12.1ec

…and 88 more

GitHub Security Advisory GHSA-7fvm-59m5-23qm

Unspecified vulnerability in Stack Group Bidding Protocol (SGBP) support in Cisco IOS 12.0...

Risk Scores

CVSS Score 7.1 / 10
EPSS Score 2.73%

Top 15% most likely to be exploited

Threat Score 29.2 / 100

Data Sources

NVD EPSS GitHub