In totolink a3100r V5.9c.4577, the hard-coded telnet password can be discovered from official released firmware. An attacker, who has connected to the Wi-Fi, can easily telnet into the target with root shell if the telnet is function turned on.
https://hackmd.io/ZkeEB-VvRiWBS53rFKG8DQ
http://totolink.com
http://a3100r.com
Source: Mitre, NVD
Published: 2022-03-30
Updated: 2026-07-05
Base Score: 7.9
Vector: CVSS2#AV:A/AC:M/Au:N/C:C/I:C/A:C
Severity: High
Base Score: 8.8
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.00139