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I. Basic Information for CVE-2021-27862
Vulnerability Information

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Vulnerability Title
L2 network filtering bypass using stacked VLAN0 and LLC/SNAP headers with an invalid length during Ethernet to Wifi frame translation
Source: NVD (National Vulnerability Database)
Vulnerability 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).
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
长度参数不一致性处理不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
多款Cisco产品安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco NX-OS Software等都是美国思科(Cisco)公司的产品。Cisco NX-OS Software是一套交换机使用的数据中心级操作系统软件。Cisco IOS是一套为其网络设备开发的操作系统。Cisco IOS XE Software是一个操作系统。 Cisco IOS Software - Switches、Cisco IOS XE Software - Switches、Cisco IOS XE Software - Routers、Cisco IOS XR Software、C
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
IEEE802.2 802.2h-1997 ~ 802.2h-1997 -
IETFdraft-ietf-v6ops-ra-guard-08 08 ~ 08 -
II. Public POCs for CVE-2021-27862
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III. Intelligence Information for CVE-2021-27862
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IV. Related Vulnerabilities
V. Comments for CVE-2021-27862

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