CVE-2021-20657

CVE-2021-20657 describes an improper access control vulnerability in SolarView Compact SV-CPT-MC310 prior to Ver.6.5, affecting Contec SV-CPT-MC310 devices and their firmware. This medium-severity vulnerability (CVSS 5.4) allows an authenticated, low-privileged attacker to obtain or alter device settings over the network with low attack complexity and no user interaction. While the potential impact includes limited confidentiality and integrity compromise, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.