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High severity8.8NVD Advisory· Published Jan 7, 2020· Updated Jun 17, 2026

CVE-2019-17147

CVE-2019-17147

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.

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Affected products

3
  • TP-Link/Tl Wr841n3 versions
    cpe:2.3:o:tp-link:tl-wr841n_firmware:0.9.1_4.16:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:o:tp-link:tl-wr841n_firmware:0.9.1_4.16:*:*:*:*:*:*:*
    • (no CPE)
    • (no CPE)range: 0.9.1 4.16 v007c.0 Build 180613 Rel.42415n

Patches

Vulnerability mechanics

References

2

News mentions

0

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