CVE-2021-0248

CVE-2021-0248 is a critical vulnerability affecting Juniper Networks Junos OS on NFX Series devices prior to version 19.1R1, specifically the NFX150, NFX250, and NFX350. It involves the use of hard-coded credentials, allowing an attacker to fully compromise any NFX deployment through administrative interfaces. With a CVSS score of 10.0 (Critical), this vulnerability is easily exploitable over the network with low attack complexity, leading to complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code, the vulnerability has garnered significant community discussion, indicating awareness among security researchers.