TP-Link TL-WR840N v5 00000005 devices allow XSS via the network name. The attacker must log into the router by breaking the password and going to the admin login page by THC-HYDRA to get the network name. With an XSS payload, the network name changed automatically and the internet connection was disconnected. All the users become disconnected from the internet.
http://packetstormsecurity.com/files/153027/TP-LINK-TL-WR840N-Cross-Site-Scripting.html
Source: MITRE
Published: 2019-05-24
Updated: 2019-05-29
Type: CWE-79
Base Score: 3.5
Vector: AV:N/AC:M/Au:S/C:N/I:P/A:N
Impact Score: 2.9
Exploitability Score: 6.8
Severity: LOW
Base Score: 4.8
Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Impact Score: 2.7
Exploitability Score: 1.7
Severity: MEDIUM