CVE-2018-3948: TP-Link Tl-r600vpn Firmware

High severity, CVSS 7.5. EPSS: 23.1% chance of exploitation in the next 30 days.

An exploitable denial-of-service vulnerability exists in the URI-parsing functionality of the TP-Link TL-R600VPN HTTP server. A specially crafted URL can cause the server to stop responding to requests, resulting in downtime for the management portal. An attacker can send either an unauthenticated or authenticated web request to trigger this vulnerability.

Affected products

• TP-Link Tl-r600vpn Firmware: version 1.3.0 only; version 1.2.3 only

Published 2018-11-30. Last modified 2026-06-17.