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CVE-2021-27862
Published: Sep 27, 2022
Modified: Nov 4, 2025
PUBLISHED
Description
Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using LLC/SNAP headers with invalid length and Ethernet to Wifi frame conversion (and optionally VLAN0 headers).
| Vendor | Product | Versions |
|---|---|---|
IEEE | 802.2 | affected 802.2h-1997 - <= 802.2h-1997 |
IETF | draft-ietf-v6ops-ra-guard-08 | affected 08 - <= 08 |
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