CVE-2019-17147
This vulnerability allows remote attackers to execute arbitrary code on affected installations of TP-LINK TL-WR841N routers.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 13.7%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.
Description
This vulnerability allows remote attackers to execute arbitrary code on affected installations of TP-LINK TL-WR841N routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the web service, which listens on TCP port 80 by default. When parsing the Host request header, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length static buffer. An attacker can leverage this vulnerability to execute code in the context of the admin user. Was ZDI-CAN-8457.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 13.65% probability · 96th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-120
- Affected
- tp-link/tl-wr841n firmware
- Source
- zdi-disclosures@trendmicro.com
EPSS 13.7% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://www.tp-link.com/us/support/download/tl-wr841n/#FirmwareProduct
- https://www.zerodayinitiative.com/advisories/ZDI-19-992/Third Party Advisory, VDB Entry
- https://www.tp-link.com/us/support/download/tl-wr841n/#FirmwareProduct
- https://www.zerodayinitiative.com/advisories/ZDI-19-992/Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.