CVE Database · CVE-2021-27853
CVSS v3.1
4.7
EPSS
0.69%
Published
Sep 27, 2022
Modified
Nov 4, 2025
Public PoC / Exploit (1)
All weaponized →Links to public security research (Exploit-DB, Nuclei, Trickest, GitHub) for defensive use only.
Description
Layer 2 network filtering capabilities such as IPv6 RA guard or ARP inspection can be bypassed using combinations of VLAN 0 headers and LLC/SNAP headers.
CVSS Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:NWeaknesses (CWE)
Affected Products (312)
References (13)
...and 262 more