CVE-2021-0207

CVE-2021-0207 describes a Denial of Service (DoS) vulnerability in Juniper Networks Junos OS, affecting various NFX, QFX, and EX series devices across multiple versions. This flaw arises from an improper interpretation conflict that prevents specific non-standard IPv4 and IPv6 traffic, redirected between different VLANs, from passing through the device. The vulnerability has a CVSS score of 7.5 (High), indicating it can be exploited remotely with low attack complexity, leading to a complete loss of availability for affected traffic. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.