Description
Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using LLC/SNAP headers with invalid length (and optionally VLAN0 headers)
References (6)
Scores
CVSS v3
4.7
EPSS
0.0011
EPSS Percentile
29.2%
Attack Vector
ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-290
CWE-130
Status
published
Products (2)
ieee/ieee_802.2
< 802.2h-1997
ietf/p802.1q
< d1.0
Published
Sep 27, 2022
Tracked Since
Feb 18, 2026