CVE-2021-20149

CRITICAL

Trendnet TEW-827DRU 2.08B01 - Unauthenticated WAN Access via IPv6

Title source: llm

Description

Trendnet AC2600 TEW-827DRU version 2.08B01 does not have sufficient access controls for the WAN interface. The default iptables ruleset for governing access to services on the device only apply to IPv4. All services running on the devices are accessible via the WAN interface via IPv6 by default.

References (1)

Core 1

Core References

Third Party Advisory x_refsource_misc

https://www.tenable.com/security/research/tra-2021-54

Scores

CVSS v3 9.8

EPSS 0.0071

EPSS Percentile 72.3%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE

CWE-863

Status published

Products (1)

trendnet/tew-827dru_firmware 2.08b01

Published Dec 30, 2021

Tracked Since Feb 18, 2026