CVE-2007-4430: Cisco Cbos

Medium severity, CVSS 5.0. EPSS: 13.3% chance of exploitation in the next 30 days.

Unspecified vulnerability in Cisco IOS 12.0 through 12.4 allows context-dependent attackers to cause a denial of service (device restart and BGP routing table rebuild) via certain regular expressions in a "show ip bgp regexp" command. NOTE: unauthenticated remote attacks are possible in environments with anonymous telnet and Looking Glass access.

Affected products

• Cisco Cbos: any version; version 12.1 only; version 12.2 only
• Cisco CLI: any version
• Cisco Ids: any version
• Cisco IOS: version 10.0 only; version 10.3 only; version 11.0 only; version 11.1 only; version 11.2 only; version 12.0 only; …
• Cisco IOS XR: any version; version 2.0 only; version 3.0 only; version 3.1 only; version 3.2 only; version 3.3 only; …

Published 2007-08-20. Last modified 2026-06-16.