CVE-2021-31251

2021-06-0420:25:52

mitre

www.cve.org

authentication bypass

telnet server

privileged connection

target device

malformed request

attacker

remote

believe

AI Score

9.7

Confidence

High

EPSS

0.07

Percentile

94.1%

JSON

An authentication bypass in telnet server in BF-430 and BF431 232/422 TCP/IP Converter, BF-450M and SEMAC from CHIYU Technology Inc allows obtaining a privileged connection with the target device by supplying a specially malformed request and an attacker may force the remote telnet server to believe that the user has already authenticated.