CVE-2021-27853

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.

Severity	MEDIUM
CVSS	4.7
CWE	CWE-290
KEV
Published	3 years ago
Modified	6 months ago

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Cisco IOS XE Software	cisco-sa-VU855201-J3z8CKTX
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Cisco Catalyst 9600 Series Switches	cisco-sa-VU855201-J3z8CKTX
Cisco Catalyst 9500 Series Switches	cisco-sa-VU855201-J3z8CKTX
Cisco Catalyst 9400 Series Switches	cisco-sa-VU855201-J3z8CKTX
Cisco Catalyst 9300 Series Switches	cisco-sa-VU855201-J3z8CKTX
Cisco Catalyst 9200 Series Switches	cisco-sa-VU855201-J3z8CKTX