Vulnerabilities > Ietf > P802 1Q > Medium

DATE CVE VULNERABILITY TITLE RISK
2022-09-27 CVE-2021-27854 Authentication Bypass by Spoofing vulnerability in multiple products
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.
low complexity
ieee ietf CWE-290
4.7
4.7
2022-09-27 CVE-2021-27861 Authentication Bypass by Spoofing vulnerability in multiple products
Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using LLC/SNAP headers with invalid length (and optionally VLAN0 headers)
low complexity
ieee ietf CWE-290
4.7
4.7
2022-09-27 CVE-2021-27862 Authentication Bypass by Spoofing vulnerability in multiple products
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).
low complexity
ieee ietf CWE-290
4.7
4.7
2022-09-27 CVE-2021-27853 Authentication Bypass by Spoofing vulnerability in multiple products
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.
low complexity
ieee ietf cisco CWE-290
4.7
4.7