Vulnerabilities > Vlan Protocol > Vlan Protocol > 802.1q

DATE CVE VULNERABILITY TITLE RISK
2005-12-21 CVE-2005-4440 Security Bypass vulnerability in Vlan Protocol Vlan Protocol 802.1Q
The 802.1q VLAN protocol allows remote attackers to bypass network segmentation and spoof VLAN traffic via a message with two 802.1q tags, which causes the second tag to be redirected from a downstream switch after the first tag has been stripped, as demonstrated by Yersinia, aka "double-tagging VLAN jumping attack."
network
low complexity
vlan-protocol
5.0