The VLAN Trunking Protocol (VTP) feature in Cisco IOS 12.1(19) allows remote attackers to cause a denial of service by sending a VTP version 1 summary frame with a VTP version field value of 2.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ios | Cisco | 12.1(19) (including) | 12.1(19) (including) |