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Vlan Protocol

vlan_protocol

Vendor: Vlan Protocol • 1 CVE

CVEs (1)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
CVE-2005-4440
1Vlan Protocol
1Vlan Protocol
Apr 16, 2026
Dec 21, 2005
N/A· v4
N/A· v3
5.0 MEDIUM· v2
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 f...Show more
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."Show less