Executive Summary

TP-Link TL-WR841N routers expose stored credentials via the httpd service on port 80. The flaw, an improper authentication check, allows unauthenticated, network-adjacent attackers to read sensitive data, enabling further compromise. The vulnerability is actively exploited in the wild (CISA KEV).

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Authoritative CVE Metadata - CVSS Base Score: 6.5 (MEDIUM) - Published: 2024-05-03T03:16:10.833 - Last Modified: 2026-09-03T17:28:42.113

[!CAUTION] Known Exploited Vulnerability: YES (CISA KEV Added: 2025-09-03)

Original Description: TP-Link TL-WR841N dropbearpwd Improper Authentication Information Disclosure Vulnerability. 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. Was ZDI-CAN-19899.

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