### [CVE-2006-4775](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4775)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

The VLAN Trunking Protocol (VTP) feature in Cisco IOS 12.1(19) and CatOS allows remote attackers to cause a denial of service by sending a VTP update with a revision value of 0x7FFFFFFF, which is incremented to 0x80000000 and is interpreted as a negative number in a signed context.

### POC

#### Reference
- http://www.cisco.com/warp/public/707/cisco-sr-20060913-vtp.shtml

#### Github
No PoCs found on GitHub currently.