CVE-2019-12195
TP-Link TL-WR840N v5 00000005 devices allow XSS via the network name.
Does this matter?
A public exploit is published in Exploit-DB, so the technical barrier is gone even though the severity is medium and EPSS is 1.8%. Treat it as high on anything reachable from the internet.
Description
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.
- CVSS 3.0
- 4.8 MEDIUMCVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 1.76% probability · 78th percentile
- Public exploits
- 1 in Exploit-DB · first 21 May 2019
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- tp-link/tl-wr840n firmware
- Source
- cve@mitre.org
EPSS 1.8% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://packetstormsecurity.com/files/153027/TP-LINK-TL-WR840N-Cross-Site-Scripting.htmlThird Party Advisory, VDB Entry
- https://www.tp-link.com/us/securityVendor Advisory
- http://packetstormsecurity.com/files/153027/TP-LINK-TL-WR840N-Cross-Site-Scripting.htmlThird Party Advisory, VDB Entry
- https://www.tp-link.com/us/securityVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.