CVE-2005-4441

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2005-12-21 · updated 2026-06-16

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.

Affected products

Pvlan Protocol: all versions

References

http://lists.grok.org.uk/pipermail/full-disclosure/2005-December/040333.html
http://www.securityfocus.com/archive/1/419831/100/0/threaded
http://www.securityfocus.com/archive/1/419834/100/0/threaded
http://lists.grok.org.uk/pipermail/full-disclosure/2005-December/040333.html
http://www.securityfocus.com/archive/1/419831/100/0/threaded
http://www.securityfocus.com/archive/1/419834/100/0/threaded

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