TP-Link TL-WR841N dropbearpwd Improper Authentication Information Disclosure Vulnerability

December 19th, 2023
ZDI-23-1808 ZDI-CAN-19899

CVE ID

CVE-2023-50224

CVSS Score

6.5 AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors

TP-Link

Affected Products

TL-WR841N

Vulnerability Details

This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of TP-Link TL-WR841N routers. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the httpd service, which listens on TCP port 80 by default. The issue results from improper authentication. An attacker can leverage this vulnerability to disclose stored credentials, leading to further compromise.

Additional Details

https://www.tp-link.com/en/support/download/tl-wr841n/v12/#Firmware

Updated Advisory (May 2026): https://www.tp-link.com/us/support/faq/5058/


Disclosure Timeline

  • 2023-02-24 - Vulnerability reported to vendor
  • 2023-12-19 - Coordinated public release of advisory
  • 2026-06-09 - Advisory Updated

Credit

Aleksandar Djurdjevic 'revengsmK'

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