VULNERABILITY INTELLIGENCE
CVE-2005-4441
CVSS score5 MEDIUM
EPSS probability1.61%
CISA KEVNot currently listed
Published2005-12-21
Last modified2026-06-16
CVSS vectorAV:N/AC:L/Au:N/C:N/I:P/A:N
Description
The PVLAN protocol allows remote attackers to bypass network segmentation and spoof PVLAN traffic via a PVLAN message with a target MAC address that is set to a gateway router, which causes the packet to be sent to the router, where the source MAC is modified, aka "Modification of the MAC spoofing PVLAN jumping attack," as demonstrated by pvlan.c.