https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-05T18:52:37.070520+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/cve-2021-27854 CVE-2021-27854 — L2 network filtering bypass using stacked VLAN0, LLC/SNAP headers, and Ethernet to Wifi frame translation 2026-10-05T18:52:37.088313+00:00

Affected: IETF P802.1Q, IETF draft-ietf-v6ops-ra-guard, IEEE 802.2

Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using combinations of VLAN 0 headers, LLC/SNAP headers, and converting frames from Ethernet to Wifi and its reverse.