CVE-2022-24973: TP-Link Tl-WR940N Firmware

High severity, CVSS 8.0. EPSS: 0.7% chance of exploitation in the next 30 days.

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of TP-Link TL-WR940N 3.20.1 Build 200316 Rel.34392n (5553) routers. Authentication is 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 the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-13992.

Affected products

• TP-Link Tl-WR940N Firmware: version 3.20.1 only

Published 2023-03-28. Last modified 2026-06-17.